grand-comm.com

https://grand-comm.com· First analyzed 02 Jun 2026· Updated 02 Jun 2026

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grand-comm.com

Mobile

Sponsored

Hosting Provider

Tencent Cloud

cloud.tencent.com

IP Address

152.136.58.52

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS45090

Organization

Tencent Cloud Computing (Beijing) Co., Ltd

Server

Apache

Nameservers

dns9.hichina.com.dns10.hichina.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.7 s10%

Speed Index

2.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6.7 MB

74 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Tencent Cloud

Technology Stack

4 Technologies Detected

Libraries

CSS Frameworks

Web Servers

Languages

SEO Analysis

D42/100

Meta Tags5/15

Content10/12

Headings3/8

Technical5/21

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

grand-comm.comgrand-comm.com

数传电台、数传模块、话音与图像电台专业供应商-深圳固迪

领先的数传电台，无线通信产品供应商，集研发、生产、销售和服务于一体。0755-83476931

Title Length27 chars

Recommended: 50-60 chars (~167px / 580px)

Description Length47 chars

Recommended: 120-160 chars

Issues (2)

• 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)

13 issues found

Upgrade to view details

Local SEO

Local Search Readiness

2/100

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

F27/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

0/25

Citation

1/25

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:10%

Words:223

Token eff.:Too Short

Sections/1K:35.9

Depth:1/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headingsavg 1.9w

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.

60/100

Passed

Critical

Warnings

Images & Alt Text

15/20

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

Semantic Structure

11/20

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

9/15

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

ARIA & Roles

0/15

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.

9/100

844 mg

CO₂e / view

6.7 MB

Page Weight

Cleaner Than

New Visitor

964 mg

Returning (cached)

482 mg

Annual (10K/mo)

101.2 kg

Emission Segments

Data Center

188 mg

Network

202 mg

Device

453 mg

Resource Breakdown

JavaScript

40.0 KB

Images

5.9 MB

CSS

713.7 KB

HTML

6.5 KB

Green Hosting Not Verified

Tencent Cloud

8 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

89d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

01.06.2026

Valid Until

30.08.2026

Subject Alternative Names (2)

grand-comm.comwww.grand-comm.com

SHA-256 Fingerprint

B0:C4:56:17:64:9E:86:42:30:12:60:A0:6F:BF:AC:7E:91:24:9D:31...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

content-encoding

📦 Gzip(gzip)

content-length

6321

content-type

text/html;charset=utf-8;

date

Tue, 02 Jun 2026 16:28:53 GMT

server

Apache/2.4.54 (Win64) OpenSSL/1.1.1p mod_fcgid/2.3.9a

vary

Accept-Encoding

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (2)

hzmx02.mxmail.netease.com

hzmx01.mxmail.netease.com

Domain Information

grand-comm.com

Domain Age

25y 3m

Created

02.03.2001

Expires

02.03.2027

Last Updated

13.02.2026

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.

36/100

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 + 宋体

WCAG Partial

51/100

Readability

/30

13/30

12px · LH 1.33

Hierarchy

/20

15/20

1x ratio · ✓ H1→H6

WCAG

/25

13/25

1.57:1 min contrast

Performance

/25

10/25

3 fonts

Heading Font

Tahoma

Sans12px

Body Font

宋体

Sans12px

Contrast Ratio

1.57:1

21 issues

Reading Comfort

Dual Sans-Serif

left aligned

12px

16px

12px

Minor Second

Scale

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

⚠️ Tight line spacing (1.33). Increase to 1.4–1.6 for better readability.

✅ Easy to read: Flesch score 94/100 — accessible to general audiences.

⚠️ Partial contrast: 21 elements below WCAG AA threshold (min 1.6:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

⚠️ Weak hierarchy: Headlines should be ≥2x body size for clear visual structure.

Buy on MyFontsFlesch 94

Color Palette

7 unique colors

16.52:1 AAA Light

#ffffff

Background· 27.2%

#211e20

Other· 6.1%

#c2def3

Primary· 39.4%

#9dacb7

Secondary· 4.8%

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Scripts & Styles

12 Resources

Scripts

Styles

Async

Defer

Top Script Sources

js(4)s95.cnzz.com(3)goutong.baidu.com(1)hm.baidu.com(1)aff-im.cdn.bcebos.com(1)

Website Identity

grand-comm.com

[email protected]

25 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.

Sponsored

Last analyzed: 02 Jun 2026 at 16:29

Historical Analysis & Change Tracking