chinachemnet.com

https://chinachemnet.com· First analyzed 10 May 2026· Updated 10 May 2026

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chinachemnet.com

Mobile

Sponsored

Hosting Provider

Chinanet SH

IP Address

222.73.8.48

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Shanghai, China

ASN

AS4811

Organization

Chinanet SH

Server

Nginx

CDN

Nameservers

ns1.chinanetsun-dns.com.ns2.chinanetsun-dns.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

729 ms10%

Speed Index

948 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

352 KB

33 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Chinanet SH

CDN

Technology Stack

1 Technologies Detected

Web Servers

Nginx

SEO Analysis

D48/100

Meta Tags7/15

Content11/12

Headings0/8

Technical12/25

E-E-A-T0/7

Images2/7

Links4/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

chinachemnet.comchinachemnet.com

China Chemical Network - the Chemical Directory of China Chemicals ...

China Chemical Network is online chemical database of China Chemicals and China Chemical Suppliers.

Title truncated.

Title Length95 chars

Recommended: 50-60 chars (~572px / 580px)

Description Length99 chars

Recommended: 120-160 chars

Issues (3)

• Title is too long (95 chars, ~572px). Will be truncated in search results.
• Missing H1 tag — every page should have exactly one H1
• Missing viewport meta tag — page may not be mobile-friendly (Google uses mobile-first indexing)

12 issues found

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Crawlability

Sitemap

Type: index

6 URLs

6 sub-sitemaps

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F33/100

Bot Access

20/25

Machine Read.

9/25

Schema Data

0/25

Citation

4/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

def. lists

Text ratio:13%

Words:736

Token eff.:Optimal

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

50/100

Passed

Critical

Warnings

Images & Alt Text

15/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

3/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

7/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

1/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

5 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

46/100

44 mg

CO₂e / view

351.8 KB

Page Weight

90%

Cleaner Than

New Visitor

50 mg

Returning (cached)

25 mg

Annual (10K/mo)

5.2 kg

Emission Segments

Data Center

10 mg

Network

10 mg

Device

23 mg

Resource Breakdown

JavaScript

47.1 KB

Images

271.6 KB

CSS

25.1 KB

HTML

8.0 KB

Green Hosting Not Verified

Chinanet SH

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

102d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

DigiCert Inc

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/1.1

Valid From

21.08.2025

Valid Until

20.08.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

chinachemnet.comwww.chinachemnet.com

SHA-256 Fingerprint

CC:71:11:FE:9D:98:47:F0:70:45:E7:61:CF:2D:1C:38:13:6C:76:C2...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Sun, 10 May 2026 09:10:16 GMT

server

nginx

transfer-encoding

chunked

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (2)

mx.chinachemnet.com

mxa.chinachemnet.com

Domain Information

chinachemnet.com

Domain Age

28y 7m

Created

04.10.1997

Expires

03.10.2026

Last Updated

01.09.2025

Registrar

Xiamen 35.com Information Co., Ltd.

DNSSEC

Not Enabled

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

32/100

Not Mobile Friendly1 breakpoint

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

tahoma

WCAG Partial

46/100

Readability

/30

8/30

12px · LH 1.92

Hierarchy

/20

10/20

WCAG

/25

14/25

1:1 min contrast

Performance

/25

14/25

1 font

Heading Font

tahoma

Body Font

tahoma

Sans12px

Contrast Ratio

1:1

9 issues

Reading Comfort

Single Family

left aligned

12px

❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Wide line spacing (1.92). 1.4–1.6 is optimal for body text.

❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 9 elements below WCAG AA threshold (min 1.0:1).

✅ Lean font stack: 1 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 0

Color Palette

8 unique colors

Light

#ffffff

Background· 66.5%

#e6eef5

Primary· 7.1%

#d4e5e7

Secondary· 6.3%

#a9c1c9

Secondary· 5.7%

#434c73

Secondary· 5.2%

#789699

Border· 4.4%

#f3f1d7

Accent· 0.6%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

3 Resources

Scripts

Styles

Async

Defer

Top Script Sources

chinachemnet.com(1)

Website Identity