cnbgvg.com

https://cnbgvg.com· First analyzed 22 May 2026· Updated 22 May 2026

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cnbgvg.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

120.27.195.57

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Hangzhou, China

ASN

AS37963

Organization

Alibaba.com LLC

Server

Microsoft IIS

Nameservers

dns19.hichina.com.dns20.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.6 s10%

Speed Index

2.0 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

3.1 MB

59 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

9 Technologies Detected

Libraries

UI Components

Other

CSS Frameworks

Icon Libraries

Web Servers

Frameworks

SEO Analysis

D51/100

Meta Tags15/15

Content10/12

Headings0/8

Technical10/25

E-E-A-T0/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile2/4

Indexability3/3

cnbgvg.comcnbgvg.com

气动球阀,电动蝶阀,调节阀,衬氟阀门,水利控制阀,大口径阀门生产厂家-上海百钢阀门集团有限公司-官网,上海阀门品牌

上海百钢阀门集团有限公司原“上海百钢阀门机械厂”始建于一九九八年，是一家有着二十多年阀门技术工艺的上海阀门生产厂家，经过多年的建设与积累发展，改制荣升集团公司。集团注册资金6188万元，集团总部坐落于上海市金山区，上海阀门品牌，中国阀门品牌之一，是集科研、铸/锻造、生产、销售服务于一体的现代化专业阀门制造企业。

Title Length57 chars

Recommended: 50-60 chars (~340px / 580px)

Description Length156 chars

Recommended: 120-160 chars

Issues (2)

• Missing H1 tag — every page should have exactly one H1
• Most images missing alt text (42/43) — critical for accessibility and SEO

11 issues found

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Crawlability

Sitemap

Type: standard

480 URLs

robots.txt

Local SEO

Local Search Readiness

12/100

Poor

4 11 2

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

Sponsored

AI & LLM Readiness

F32/100

Bot Access

20/25

Machine Read.

8/25

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

Text ratio:15%

Words:406

Token eff.:Optimal

Structured Data

No Schema

Citation Readiness

Opening Summary10w

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 (12)

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.

56/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

5/20

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

Forms & Inputs

10/15

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

7/15

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

ARIA & Roles

9/15

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.

19/100

386 mg

CO₂e / view

3.1 MB

Page Weight

30%

Cleaner Than

New Visitor

442 mg

Returning (cached)

221 mg

Annual (10K/mo)

46.4 kg

Emission Segments

Data Center

86 mg

Network

93 mg

Device

207 mg

Resource Breakdown

JavaScript

327.4 KB

Images

2.3 MB

CSS

408.2 KB

HTML

9.0 KB

Green Hosting Not Verified

Alibaba Cloud

5 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

49d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

sslTrus

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

10.07.2025

Valid Until

10.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

cnbgvg.comwww.cnbgvg.com

SHA-256 Fingerprint

01:C6:10:B0:AE:1E:84:EF:47:D2:49:3E:25:33:40:5A:68:5D:67:C0...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

accept-ranges

bytes

content-encoding

📦 Gzip(gzip)

content-length

8961

content-type

text/html

date

Fri, 22 May 2026 07:55:17 GMT

etag

"8032b6267726db1:0"

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

cnbgvg.com

Domain Age

5y 5m

Created

01.12.2020

Expires

01.12.2027

Last Updated

03.11.2025

Registrar

Alibaba Cloud Computing (Beijing) 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.

47/100

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.

Viewport

initial-scale=1.0, minimum-scale=1.0, maximum-scale=2.0, user-scalable=no, width=device-width

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

微软雅黑

WCAG Partial

50/100

Readability

/30

19/30

14px · LH 1.50

Hierarchy

/20

7/20

WCAG

/25

10/25

2.85:1 min contrast

Performance

/25

14/25

1 font

Heading Font

微软雅黑

Body Font

微软雅黑

Sans14px

Contrast Ratio

2.85:1

6 issues

Reading Comfort

~44 CPL

Narrow lines

14px

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

✅ Optimal line spacing: 1.50 ratio (ideal range 1.4–1.6).

✅ Easy to read: Flesch score 97/100 — accessible to general audiences.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 2.9:1).

⚠️ Text justify detected: Justified text creates uneven word spacing, hurting readability on web.

❌ Pure vw font sizes: Viewport units alone break browser zoom (WCAG 1.4.4 fail). Use clamp(rem, vw, rem).

Buy on MyFontsFlesch 97

Color Palette

8 unique colors

2.68:1 Fail Light

#ffffff

Background· 15.5%

#a59c9d

Other· 6.5%

#020920

Accent· 49.699999999999996%

#182956

Accent· 8.2%

#e3611b

Primary· 7.7%

#23406e

Accent· 5.8%

#5f556f

Secondary· 4.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

20 Resources

Scripts

Styles

Async

Defer

Top Script Sources

..(13)

Website Identity

cnbgvg.com

baigangvalve@163.com

021-57278881

5 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.

Sponsored

Last analyzed: 22 May 2026 at 07:55

Historical Analysis & Change Tracking