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dffl.com.cn

https://dffl.com.cn· First analyzed 29 Apr 2026· Updated 29 Apr 2026
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dffl.com.cn
Desktop screenshot of dffl.com.cn
Mobile screenshot of dffl.com.cn
Mobile

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Hosting Provider

IP Address

223.76.216.216

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Wuhan, China

ASN

AS9808

Organization

China Mobile

Nameservers

dns-ch.xinnet.com.dns-ch2.xinnet.com.

Performance

75

Core Web Vitals

Weight

First Contentful Paint
3.1 s10%
Speed Index
4.0 s10%
Largest Contentful Paint
25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
1.5 MB
22 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Frontend
Styling
Bootstrap
Infrastructure
Hosting
China Mobile

Technology Stack

4 Technologies Detected

Libraries

2

CSS Frameworks

2

SEO Analysis

D42/100
11
11
1
Meta Tags5/15
Content8/12
Headings1/8
Technical10/21
E-E-A-T0/7
Images2/7
Links4/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
D
dffl.com.cndffl.com.cn

东风锻造有限公司

东风锻造有限公司

Title Length8 chars

Recommended: 50-60 chars (~49px / 580px)

Description Length8 chars

Recommended: 120-160 chars

Issues (1)

  • Missing H1 tag — every page should have exactly one H1

Local SEO

Local Search Readiness

6/100
Poor
2 13 2

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

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AI & LLM Readiness

F27/100
Bot Access
20/25
Machine Read.
2/25
Schema Data
0/25
Citation
5/25

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
nav
Text ratio:6%
Words:63
Token eff.:Too Short
Sections/1K:20
Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary
Descriptive Headingsavg 1w
Canonical URL
Open Graph0/3
Twitter Card0/3
Language Tag
Publish Date
Author Info
Lists
Tables
TL;DR / Summary
About Page Link
Recommendations (12)
AI readiness recommendation preview...

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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.
C
61/100
8
Passed
5
Critical
0
Warnings
Images & Alt Text
10/20
Checks if images have descriptive alt text for screen readers and visually impaired users.
Semantic Structure
9/20
Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
Forms & Inputs
15/15
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
3/15
Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
3 recommendations
  • Accessibility recommendation preview...

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.
30/100
C
193 mg
CO₂e / view
1.5 MB
Page Weight
60%
Cleaner Than
New Visitor
221 mg
vs
Returning (cached)
110 mg
Annual (10K/mo)
23.2 kg
Emission Segments
Data Center
43 mg
Network
46 mg
Device
104 mg
Resource Breakdown
JavaScript
409.6 KB
Images
886.0 KB
CSS
255.5 KB
HTML
11.0 KB
Green Hosting Not Verified
China Mobile
6 recommendations
  • Carbon footprint recommendation preview...
B

Security Score

71%Good
Static / Informational

HTTPS

No WAF

62d

Certificate Details

Type

Organization Validated (OV)

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

18.06.2025

Valid Until

30.06.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.dffl.com.cndffl.com.cn

SHA-256 Fingerprint

B8:97:9A:64:03:24:EC:D3:9A:EE:66:DF:D3:C3:AF:69:05:3E:56:ED...

Recommendations

Security recommendation preview

HTTP Headers

Developer Console

cache-control
🟣 Private(private)
connection
keep-alive
content-length
10972
content-type
text/html; charset=utf-8
date
Wed, 29 Apr 2026 22:54:26 GMT
Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

50

SPF
DKIM
DMARC

MX Records (1)

smtp.dffl.com.cn

Domain Information

dffl.com.cn

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.
D
57/100
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.
Viewport
width=device-width, initial-scale=1
2 recommendations
  • Mobile compatibility recommendation preview...

Typography & Readability

微软雅黑

WCAG Partial
56/100
Readability
/30
20/30

14px · LH 1.43

Hierarchy
/20
7/20
WCAG
/25
16/25

1.53:1 min contrast

Performance
/25
13/25

1 font · 2 req

Heading Font

微软雅黑

Sans

Body Font

微软雅黑

Sans14px

Contrast Ratio

1.53:1

21 issues

Reading Comfort

Single Font Family

left aligned
15px
h3

⚠️ Small text: 14px may strain on mobile. Use ≥16px for WCAG compliance.

✅ Optimal line spacing: 1.43 ratio (ideal range 1.4–1.6).

⚠️ Partial contrast: 21 elements below WCAG AA threshold (min 1.5:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

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

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

Color Palette

11 unique colors
6.49:1 AA Light
#ffffff
Background· 47.300000000000004%
#5b6050
Secondary· 4.3%
#024f91
Primary· 6.5%
#97c7d7
Secondary· 6.4%
#142822
Secondary· 6.3%
#393d2b
Secondary· 5.3%
#547f72
Secondary· 5%
#d1dbdb
Secondary· 4.8%

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Scripts & Styles

9 Resources

5
Scripts
4
Styles
0
Async
0
Defer

Top Script Sources

local(5)

Website Identity

dffl.com.cn

Location detected: 🇨🇳 Chinavia tld
zh-CN

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Last analyzed: 29 Apr 2026 at 23:09

Historical Analysis & Change Tracking