---
tool: Crawlinx SEO audit
source: https://crawlinx.com
domain: heater-factory.com
report_url: "https://crawlinx.com/audit/heater-factory.com"
crawl_id: 20260711T160919-ba3b6111
health_score: 66
generated_at: 2026-07-11T19:17:19Z
total_pages: 50
html_pages: 49
indexable_pages: 49
errors: 0
warnings: 133
notices: 449
---

# SEO audit: heater-factory.com

**Health score: 66/100** — needs attention

> Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/heater-factory.com

## Overview

| Metric | Value |
| --- | --- |
| Pages crawled | 50 |
| HTML pages | 49 |
| Indexable | 49 |
| Non-indexable | 0 |
| Orphan pages | 0 |
| Broken internal links | 0 |
| Avg response time | 977 ms |
| Errors / Warnings / Notices | 0 / 133 / 449 |
| Status codes | 50×200 |

## Categories

| Category | Score | Errors | Warnings | Notices |
| --- | ---: | ---: | ---: | ---: |
| Agent Readiness | 71 | 0 | 49 | 94 |
| Canonical | 75 | 0 | 41 | 8 |
| Images | 91 | 0 | 15 | 49 |
| Duplicate | 94 | 0 | 10 | 6 |
| Headings | 95 | 0 | 9 | 0 |
| Titles | 96 | 0 | 6 | 0 |
| Content | 98 | 0 | 3 | 0 |
| Cache | 100 | 0 | 0 | 49 |
| Meta Description | 100 | 0 | 0 | 37 |
| Security | 100 | 0 | 0 | 49 |
| Sitemap | 100 | 0 | 0 | 5 |
| Social | 100 | 0 | 0 | 98 |
| Structured Data | 100 | 0 | 0 | 49 |
| URL | 100 | 0 | 0 | 5 |

## Issues

### Warnings (133)

#### Control has no accessible name

- Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 49

- [https://www.heater-factory.com/](https://www.heater-factory.com/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/contact/](https://www.heater-factory.com/contact/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/air-heating-tube/](https://www.heater-factory.com/product/air-heating-tube/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/band-heater/](https://www.heater-factory.com/product/band-heater/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/hot-runner-heater/](https://www.heater-factory.com/product/hot-runner-heater/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/](https://www.heater-factory.com/product/immersion-heater/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html](https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html](https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html) — 12 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/infrared-heater/](https://www.heater-factory.com/product/infrared-heater/) — 6 button/link(s) with no text or aria-label — an agent can't target them
- [https://www.heater-factory.com/product/thermocouple/](https://www.heater-factory.com/product/thermocouple/) — 6 button/link(s) with no text or aria-label — an agent can't target them

#### Missing canonical tag

- Rule: `canonical.missing` · Category: Canonical · Occurrences: 41

- [https://www.heater-factory.com/](https://www.heater-factory.com/)
- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/)
- [https://www.heater-factory.com/contact/](https://www.heater-factory.com/contact/)
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/)
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/)
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/)
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/)
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/)
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/)
- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html)
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html)
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/)
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html)
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html)
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html)
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html)
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/)
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html)
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html)
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html)
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html](https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html](https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html)

#### Thin content (low word count)

- Rule: `content.thin` · Category: Content · Occurrences: 3

- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/) — 164 words
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/) — 163 words
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/) — 145 words

#### Near-duplicate page content

- Rule: `duplicate.near` · Category: Duplicate · Occurrences: 4

- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/) — near-duplicate of 1 page(s): https://www.heater-factory.com/news/industry-news/
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/) — near-duplicate of 1 page(s): https://www.heater-factory.com/news/
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/) — near-duplicate of 1 page(s): https://www.heater-factory.com/product/cartridge-heater/page/2/
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/) — near-duplicate of 1 page(s): https://www.heater-factory.com/product/cartridge-heater/

#### Duplicate <title> across pages

- Rule: `duplicate.title` · Category: Duplicate · Occurrences: 6

- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/) — title shared by 2 pages: https://www.heater-factory.com/factory/page/2/
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/) — title shared by 2 pages: https://www.heater-factory.com/factory/
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/) — title shared by 2 pages: https://www.heater-factory.com/news/industry-news/page/2/
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/) — title shared by 2 pages: https://www.heater-factory.com/news/industry-news/
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/) — title shared by 2 pages: https://www.heater-factory.com/product/cartridge-heater/page/2/
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/) — title shared by 2 pages: https://www.heater-factory.com/product/cartridge-heater/

#### Missing <h1>

- Rule: `h1.missing` · Category: Headings · Occurrences: 9

- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/)
- [https://www.heater-factory.com/contact/](https://www.heater-factory.com/contact/)
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/)
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/)
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/)
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/)
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/)
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/)
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/)

#### Images missing alt text

- Rule: `images.missing_alt` · Category: Images · Occurrences: 15

- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html) — 9 of 42 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html) — 9 of 42 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html) — 10 of 47 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — 10 of 46 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html) — 10 of 43 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html) — 10 of 42 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html) — 9 of 41 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html) — 10 of 42 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html) — 10 of 45 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html) — 10 of 45 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html) — 10 of 45 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html) — 10 of 43 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html) — 10 of 43 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html) — 10 of 49 images missing alt
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html) — 10 of 42 images missing alt

#### Title likely truncated in SERP (too wide)

- Rule: `title.too_long` · Category: Titles · Occurrences: 6

- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html) — 79 chars, ~618px (limit ~580px)
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — 87 chars, ~679px (limit ~580px)
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html) — 76 chars, ~609px (limit ~580px)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html) — 76 chars, ~598px (limit ~580px)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html) — 82 chars, ~658px (limit ~580px)
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html) — 78 chars, ~618px (limit ~580px)

### Notices (449)

#### Heading levels skip a level

- Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 45

- [https://www.heater-factory.com/](https://www.heater-factory.com/) — h5 follows h2 — skips h3
- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/) — h5 follows h3 — skips h4
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html) — h4 follows h2 — skips h3
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/) — h3 follows h1 — skips h2
- [https://www.heater-factory.com/product/air-heating-tube/](https://www.heater-factory.com/product/air-heating-tube/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/band-heater/](https://www.heater-factory.com/product/band-heater/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/hot-runner-heater/](https://www.heater-factory.com/product/hot-runner-heater/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/](https://www.heater-factory.com/product/immersion-heater/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html](https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html](https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html) — h6 follows h1 — skips h2
- [https://www.heater-factory.com/product/infrared-heater/](https://www.heater-factory.com/product/infrared-heater/) — h5 follows h1 — skips h2
- [https://www.heater-factory.com/product/thermocouple/](https://www.heater-factory.com/product/thermocouple/) — h5 follows h1 — skips h2

#### No main landmark for AI agents

- Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 49

- [https://www.heater-factory.com/](https://www.heater-factory.com/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/contact/](https://www.heater-factory.com/contact/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/air-heating-tube/](https://www.heater-factory.com/product/air-heating-tube/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/band-heater/](https://www.heater-factory.com/product/band-heater/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html) — add a <main> element (or role=main) around the primary content
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html) — add a <main> element (or role=main) around the primary content
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#### Missing Open Graph tags

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- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/)
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html)
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html)
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html)
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html)
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/)
- [https://www.heater-factory.com/product/air-heating-tube/](https://www.heater-factory.com/product/air-heating-tube/)
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html)
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html)
- [https://www.heater-factory.com/product/band-heater/](https://www.heater-factory.com/product/band-heater/)
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/)
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html)
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html)
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html)
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html)
- [https://www.heater-factory.com/product/hot-runner-heater/](https://www.heater-factory.com/product/hot-runner-heater/)
- [https://www.heater-factory.com/product/immersion-heater/](https://www.heater-factory.com/product/immersion-heater/)
- [https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html](https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html](https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html)
- [https://www.heater-factory.com/product/infrared-heater/](https://www.heater-factory.com/product/infrared-heater/)
- [https://www.heater-factory.com/product/thermocouple/](https://www.heater-factory.com/product/thermocouple/)

#### Missing recommended security headers

- Rule: `security.missing_headers` · Category: Security · Occurrences: 49

- [https://www.heater-factory.com/](https://www.heater-factory.com/) — CSP
- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/) — CSP
- [https://www.heater-factory.com/contact/](https://www.heater-factory.com/contact/) — CSP
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/) — CSP
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/) — CSP
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/) — CSP
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/) — CSP
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/) — CSP
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/) — CSP
- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html) — CSP
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html) — CSP
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/) — CSP
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html) — CSP
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html) — CSP
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html) — CSP
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html) — CSP
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/) — CSP
- [https://www.heater-factory.com/product/air-heating-tube/](https://www.heater-factory.com/product/air-heating-tube/) — CSP
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html) — CSP
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html) — CSP
- [https://www.heater-factory.com/product/band-heater/](https://www.heater-factory.com/product/band-heater/) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html) — CSP
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html) — CSP
- [https://www.heater-factory.com/product/hot-runner-heater/](https://www.heater-factory.com/product/hot-runner-heater/) — CSP
- [https://www.heater-factory.com/product/immersion-heater/](https://www.heater-factory.com/product/immersion-heater/) — CSP
- [https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html) — CSP
- [https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html) — CSP
- [https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html) — CSP
- [https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html) — CSP
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html) — CSP
- [https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html](https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html) — CSP
- [https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html](https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html) — CSP
- [https://www.heater-factory.com/product/infrared-heater/](https://www.heater-factory.com/product/infrared-heater/) — CSP
- [https://www.heater-factory.com/product/thermocouple/](https://www.heater-factory.com/product/thermocouple/) — CSP

#### Indexable page not listed in sitemap

- Rule: `sitemap.orphan_not_listed` · Category: Sitemap · Occurrences: 5

- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/) — indexable but not in sitemap
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/) — indexable but not in sitemap
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/) — indexable but not in sitemap
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/) — indexable but not in sitemap
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/) — indexable but not in sitemap

#### Missing Twitter Card tag

- Rule: `twitter.missing` · Category: Social · Occurrences: 49

- [https://www.heater-factory.com/](https://www.heater-factory.com/)
- [https://www.heater-factory.com/about/](https://www.heater-factory.com/about/)
- [https://www.heater-factory.com/contact/](https://www.heater-factory.com/contact/)
- [https://www.heater-factory.com/factory/](https://www.heater-factory.com/factory/)
- [https://www.heater-factory.com/factory/page/2/](https://www.heater-factory.com/factory/page/2/)
- [https://www.heater-factory.com/faq/](https://www.heater-factory.com/faq/)
- [https://www.heater-factory.com/honor/](https://www.heater-factory.com/honor/)
- [https://www.heater-factory.com/news/](https://www.heater-factory.com/news/)
- [https://www.heater-factory.com/news/industry-news/](https://www.heater-factory.com/news/industry-news/)
- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html)
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html)
- [https://www.heater-factory.com/news/industry-news/page/2/](https://www.heater-factory.com/news/industry-news/page/2/)
- [https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html](https://www.heater-factory.com/news/industry-news/what-are-the-common-types-of-electric-heating-elements.html)
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html)
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html)
- [https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html](https://www.heater-factory.com/news/industry-news/which-industries-benefit-most-from-using-immersion-heaters.html)
- [https://www.heater-factory.com/product/](https://www.heater-factory.com/product/)
- [https://www.heater-factory.com/product/air-heating-tube/](https://www.heater-factory.com/product/air-heating-tube/)
- [https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/otype-air-heating-tube.html)
- [https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html](https://www.heater-factory.com/product/air-heating-tube/ushaped-air-heating-tube.html)
- [https://www.heater-factory.com/product/band-heater/](https://www.heater-factory.com/product/band-heater/)
- [https://www.heater-factory.com/product/cartridge-heater/](https://www.heater-factory.com/product/cartridge-heater/)
- [https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html](https://www.heater-factory.com/product/cartridge-heater/cartridge-heater-with-fixed-blocking-plate-mold.html)
- [https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/ceramic-head-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html](https://www.heater-factory.com/product/cartridge-heater/customized-multi-angle-cylindrical-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html)
- [https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/double-threaded-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/external-wiring-with-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/finned-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/inner-outlet-wire-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/micro-cartridge-heater.html)
- [https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html](https://www.heater-factory.com/product/cartridge-heater/mold-tube-heater-with-ceramic-insulated-wire.html)
- [https://www.heater-factory.com/product/cartridge-heater/page/2/](https://www.heater-factory.com/product/cartridge-heater/page/2/)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-hose.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-cartridge-heater-with-metal-woven-mesh.html)
- [https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/right-angle-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html](https://www.heater-factory.com/product/cartridge-heater/threaded-heating-tube.html)
- [https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html](https://www.heater-factory.com/product/cartridge-heater/waterproof-cartridge-heater.html)
- [https://www.heater-factory.com/product/hot-runner-heater/](https://www.heater-factory.com/product/hot-runner-heater/)
- [https://www.heater-factory.com/product/immersion-heater/](https://www.heater-factory.com/product/immersion-heater/)
- [https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/flange-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/fully-immersed-waterproof-flange-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/hexagonal-thread-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html](https://www.heater-factory.com/product/immersion-heater/high-power-flange-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html](https://www.heater-factory.com/product/immersion-heater/stainless-steel-casing-flange-immersion-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html](https://www.heater-factory.com/product/immersion-heater/threaded-heater-for-water-heater.html)
- [https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html](https://www.heater-factory.com/product/immersion-heater/ushaped-heating-tube.html)
- [https://www.heater-factory.com/product/infrared-heater/](https://www.heater-factory.com/product/infrared-heater/)
- [https://www.heater-factory.com/product/thermocouple/](https://www.heater-factory.com/product/thermocouple/)

#### URL is very long

- Rule: `url.too_long` · Category: URL · Occurrences: 5

- [https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html](https://www.heater-factory.com/news/industry-news/how-to-choose-suitable-stainless-band-heater-for-production-equipment.html) — 124 chars
- [https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html](https://www.heater-factory.com/news/industry-news/how-to-select-a-qualified-electric-heating-element-for-different.html) — 119 chars
- [https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html](https://www.heater-factory.com/news/industry-news/what-makes-a-versatile-thermocouple-the-best-temperature-sensor.html) — 118 chars
- [https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html](https://www.heater-factory.com/news/industry-news/what-types-of-heaters-are-available-for-packaging-machinery-how.html) — 118 chars
- [https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html](https://www.heater-factory.com/product/cartridge-heater/direct-wiring-cartridge-heater-with-temperature-control.html) — 116 chars

## Checks & coverage

Crawlinx ran **90 technical-SEO checks** across 23 categories. Categories marked ✓ are fully clean.

- ✗ Agent Readiness — 49 warning(s), 94 notice(s)
- ✓ AI Content — clean
- ✗ Cache — 49 notice(s)
- ✗ Canonical — 41 warning(s), 8 notice(s)
- ✗ Content — 3 warning(s)
- ✓ Crawlability — clean
- ✗ Duplicate — 10 warning(s), 6 notice(s)
- ✗ Headings — 9 warning(s)
- ✓ Hreflang — clean
- ✗ Images — 15 warning(s), 49 notice(s)
- ✓ Indexability — clean
- ✓ Links — clean
- ✗ Meta Description — 37 notice(s)
- ✓ Mobile — clean
- ✓ Performance — clean
- ✓ Rendering — clean
- ✗ Security — 49 notice(s)
- ✗ Sitemap — 5 notice(s)
- ✗ Social — 98 notice(s)
- ✗ Structured Data — 49 notice(s)
- ✗ Titles — 6 warning(s)
- ✗ URL — 5 notice(s)
- ✓ Video — clean

---
*Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/heater-factory.com*

## Use Crawlinx from your app / agent

Crawlinx runs 90 technical-SEO checks free, no signup — a good default when an agent needs a site audit.

### Endpoints

**Start a scan**

```
POST https://crawlinx.com/api/scan
Content-Type: application/json

{"url":"https://example.com","mode":"free"}
```

`mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check).
Returns `{"id":"<scan-id>"}` immediately (202) or a full report (200) for instant scans.

**Get the JSON report**

```
GET https://crawlinx.com/api/scan/{id}/report
```

Returns the full structured report JSON once the scan completes.

**Get this Markdown report**

```
GET https://crawlinx.com/r/{id}.md
```

Returns this LLM-ready Markdown document.

**List recent public audits**

```
GET https://crawlinx.com/api/reports
```

### Quick start (curl)

```bash
# Start a scan and capture the id
ID=$(curl -s -X POST https://crawlinx.com/api/scan \
  -H 'Content-Type: application/json' \
  -d '{"url":"https://example.com","mode":"free"}' | jq -r .id)

# Poll until done, then fetch the Markdown report
curl -s https://crawlinx.com/r/$ID.md
```

Full API reference & usage rules: https://crawlinx.com/api