Chvacuum.com 真空技术网 - 专业研究真空技术及真空泵等真空设备的真空网

集真空理论与真空标准，真空泵、真空阀门等真空设备，真空检漏、密封及测量等真空技术，以及以真空镀膜、真空包装与真空干燥为主的真空应用为一体的真空行业网站。

Chvacuum.com Overview

Chvacuum.com ranking shows that the page is at position 289,166 over the world.

In terms of rank-to-traffic ratio, chvacuum.com has 1,402 unique users per day, viewing 2,548 pages. The rank based value of chvacuum.com is 49,719 USD. Every user makes 1.95 pageviews on average.

Chvacuum.com boasts a link base consisting of 228 referring domains and 250 external backlinks, as revealed by the data obtained from web network scanning.

Chvacuum.com top-level domain belongs to .COM domain zone. Check other webpages in .COM zone.

According the last verification test in July 24, 2024, chvacuum.com has an expired SSL certificate issued by DigiCert Inc (expired on August 13, 2019). Click button “Update” SSL Information at the Safety Information section. Check the list of websites using SSL by DigiCert Inc.

Based on data from Google Safe Browsing, Google Safe Search and Symantec chvacuum.com is a fairly safe domain.

Based on Mobile-Friendly test by Google chvacuum.com is poorly optimized for mobile phones and tablets. Remember that optimizing your website design for mobile devices ensures that all of your web pages perform well on all devices.

Chvacuum.com Rank Summary

Global Rank

289,166

Average Load Time

0.00sec

Links In Count

Website Value

$46,036

Audience Geography. Where are chvacuum.com visitors located?

Country	Visitors

Country	Pageviews

Country	Rank

Where do visitors go on chvacuum.com?

Subdomain	Pageviews

Subdomain	Pageviews per User

Subdomain	Reach

How popular is chvacuum.com?

Period	Global Rank	Global Rank Delta
past 3 months	289166	-92532
past month	486298	209497

Days	Pageviews Rank	Pageviews Rank Delta	Pageviews per Million	Pageviews per Million Delta	Pageviews per User	Pageviews per User Delta
90	385348	-197127	1	80%	1.8	40%
30	636288	199661	5	-38.41%	2	40%

Days	Reach Rank	Reach Rank Delta	Reach per Million	Reach per Million Delta
90	269493	-55053	2	30%
30	455879	221709	1	-55.988%

Chvacuum.com Website Safety

Overview

Last Updated: 01/26/2026

Overall result - chvacuum.com is safe.

We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.

Norton Connect Safe

Last Updated: 03/21/2025

chvacuum.com is safe.

Norton ConnectSafe evaluates chvacuum.com for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search

Last Updated: 06/15/2019

chvacuum.com is safe.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing

Last Updated: 01/09/2019

chvacuum.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.

Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.

Site Advisor

Last Updated: 02/28/2021

chvacuum.com is safe.

McAfee assesses chvacuum.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze chvacuum.com for mature or inappropriate content, only security checks are evaluated.

Web of Trust

Last Updated: 01/26/2026

chvacuum.com child safety is unknown.

The WOT calculates reputation of the chvacuum.com. This reputation system receives ratings from users and information from third-party sources, assesses the chvacuum.com for safety features and confirms, whether chvacuum.com is suitable for children.

SSL Information

SSL Checker Tool

Domain	www.webhostingtest1.com
Issuer Organization	DigiCert Inc
Issuer	Encryption Everywhere DV TLS CA - G1
Algorithm	RSA-SHA256
Valid form	08/13/2018
Expiration	08/13/2019
Signed	Certificate is not self signed
Additional Domains	www.webhostingtest1.com webhostingtest1.com

Chvacuum.com Rank History

Alexa Rank shows how popular chvacuum.com is in comparison with other sites. The most popular site has Alexa Rank equals 1. If chvacuum.com has Alexa Rank equals 100,000, then it is in TOP 100,000 popular sites in the world. The rank is calculated using a combination of average daily visitors to chvacuum.com and pageviews on chvacuum.com over the past 3 months.

Chvacuum.com Hosting Information

Server Location

Geolocation Tool

ASN Information

ASN Lookup Tool

ASN ID: 37963

ASN Title: CNNIC-ALIBABA-CN-NET-AP Hangzhou Alibaba Advertising Co.,Ltd., CN

Last Update: 08/26/2025

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS37888 - AS38911'

as-block: AS37888 - AS38911
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T06:04:16Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS37936 - AS37970'

as-block: AS37936 - AS37970
descr: CNNIC ASN block
country: CN
remarks: These AS numbers are further assigned by CNNIC
remarks: to CNNIC members and end-users in China
admin-c: IPAS1-AP
tech-c: IPAS1-AP
mnt-by: APNIC-HM
mnt-lower: MAINT-CNNIC-AP
last-modified: 2008-09-04T06:40:26Z
source: APNIC

role: CNNIC IPAS CONFEDERATION
address: No.4, Zhongguancun No.4 South Street,
address: Haidian District, Beijing
country: CN
phone: +86-010-58813000
fax-no: +86-010-58813075
e-mail: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
nic-hdl: IPAS1-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-09-12T07:40:01Z
source: APNIC

% Information related to 'AS37963'

% Abuse contact for 'AS37963' is 'ipas@cnnic.cn'

aut-num: AS37963
as-name: CNNIC-ALIBABA-CN-NET-AP
descr: Hangzhou Alibaba Advertising Co.,Ltd.
descr: East Software Park, 99 Huaxing Rd.
descr: Hangzhou, China
country: CN
admin-c: ZM678-AP
tech-c: ZM877-AP
tech-c: ZM876-AP
tech-c: ZM875-AP
import: from AS4837
action pref=100;
accept ANY
import: from AS4134
action pref=100;
accept ANY
export: to AS4837
announce AS37963
export: to AS4134
announce AS37963
mnt-routes: MAINT-CNNIC-AP
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2013-07-24T02:44:02Z
source: APNIC

irt: IRT-CNNIC-CN
address: Beijing, China
e-mail: ipas@cnnic.cn
abuse-mailbox: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
auth: # Filtered
remarks: Please note that CNNIC is not an ISP and is not
remarks: empowered to investigate complaints of network abuse.
remarks: Please contact the tech-c or admin-c of the network.
mnt-by: MAINT-CNNIC-AP
last-modified: 2017-11-01T08:57:39Z
source: APNIC

person: Shuo Yu
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: shuo.yus@alibaba-inc.com
e-mail: shuo.yus@aliyun-inc.com
nic-hdl: ZM678-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2011-11-02T03:36:02Z
source: APNIC

person: Guoxin Gao
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: anti-spam@list.alibaba-inc.com
nic-hdl: ZM875-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2014-07-30T01:56:01Z
source: APNIC

person: security trouble
e-mail: cloud-cc-sqcloud@list.alibaba-inc.com
address: 5th,floor,Building D,the West Lake International Plaza of S&T,391#Wen’er Road
address: Hangzhou, Zhejiang, China
phone: +86-0571-85022600
country: CN
mnt-by: MAINT-CNNIC-AP
nic-hdl: ZM876-AP
last-modified: 2013-07-08T02:56:02Z
source: APNIC

person: Guowei Pan
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022088-30763
fax-no: +86-0571-85022600
e-mail: guowei.pangw@alibaba-inc.com
nic-hdl: ZM877-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-07-09T01:34:02Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

Chvacuum.com Domain Registration and Settings

WHOIS

WHOIS Lookup Tool

Domain Name: CHVACUUM.COM
Registry Domain ID: 1268461010_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-04-01T00:39:51Z
Creation Date: 2007-10-11T06:50:39Z
Registry Expiry Date: 2025-10-11T06:50:39Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Name Server: DNS27.HICHINA.COM
Name Server: DNS28.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-01-12T12:37:26Z

DNS Records

DNS Lookup Tool

Host	A Record	TTL

Host	MX Record	Priority	TTL

Host	NS Record	TTL

Host	TXT Record	TTL

Chvacuum.com HTML Check

HTML Validation Tool

Errors

Malformed byte sequence: “d5”.

Malformed byte sequence: “e6”, “bf”.

Malformed byte sequence: “bc”.

Malformed byte sequence: “ca”.

Malformed byte sequence: “f5”.

Malformed byte sequence: “cd”.

Malformed byte sequence: “f8”.

Malformed byte sequence: “d1”.

Malformed byte sequence: “bf”.

Malformed byte sequence: “b0”.

Malformed byte sequence: “c8”.

Malformed byte sequence: “c9”.

Malformed byte sequence: “b5”.

Malformed byte sequence: “c4”.

Malformed byte sequence: “d0”.

Malformed byte sequence: “c3”.

Malformed byte sequence: “e2”.

Malformed byte sequence: “c1”.

Malformed byte sequence: “ec”.

Malformed byte sequence: “ea”.

Malformed byte sequence: “c6”.

Malformed byte sequence: “af”.

Malformed byte sequence: “c0”.

Malformed byte sequence: “ed”.

Malformed byte sequence: “c2”.

Malformed byte sequence: “db”.

Malformed byte sequence: “d3”.

Malformed byte sequence: “eb”.

Malformed byte sequence: “a3”.

Malformed byte sequence: “ac”.

Malformed byte sequence: “a2”.

Malformed byte sequence: “a7”.

Malformed byte sequence: “a1”.

Malformed byte sequence: “b2”.

Malformed byte sequence: “d2”.

Malformed byte sequence: “d4”.

Malformed byte sequence: “fc”.

Malformed byte sequence: “ef”.

Malformed byte sequence: “d6”.

Malformed byte sequence: “f7”.

Malformed byte sequence: “cc”.

Malformed byte sequence: “e5”, “b5”.

Almost standards mode doctype. Expected “<!DOCTYPE html>”.

When the attribute “xml:lang” in no namespace is specified, the element must also have the attribute “lang” present with the same value.

Internal encoding declaration “gb2312” disagrees with the actual encoding of the document (“utf-8”).

Bad value “text/html; charset=gb2312” for attribute “content” on element “meta”: “gb2312” is not a preferred encoding name. The preferred label for this encoding is “gbk”.

Malformed byte sequence: “a5”.

Malformed byte sequence: “bb”.

Malformed byte sequence: “cb”.

Malformed byte sequence: “e3”.

Malformed byte sequence: “f9”.

Malformed byte sequence: “b4”.

Malformed byte sequence: “c5”.

Malformed byte sequence: “b9”.

Malformed byte sequence: “a4”.

Malformed byte sequence: “e5”, “bb”.

Malformed byte sequence: “fa”.

Malformed byte sequence: “fd”.

Malformed byte sequence: “b6”.

Malformed byte sequence: “ce”.

Malformed byte sequence: “be”.

Malformed byte sequence: “e1”.

Malformed byte sequence: “b8”.

Malformed byte sequence: “e4”.

Malformed byte sequence: “c7”.

Malformed byte sequence: “da”.

Malformed byte sequence: “d7”.

Malformed byte sequence: “a6”.

Malformed byte sequence: “ed”, “b9”, “a4”.

Malformed byte sequence: “e3”, “bb”.

Malformed byte sequence: “f0”.

Malformed byte sequence: “b1”.

Malformed byte sequence: “ba”.

Malformed byte sequence: “bd”.

Malformed byte sequence: “ab”.

Malformed byte sequence: “e9”.

Malformed byte sequence: “ec”, “b5”.

Malformed byte sequence: “dc”.

Malformed byte sequence: “fe”.

Malformed byte sequence: “df”.

Malformed byte sequence: “b7”.

Malformed byte sequence: “a8”.

Malformed byte sequence: “fb”.

Malformed byte sequence: “b3”.

Malformed byte sequence: “e8”, “bc”.

Malformed byte sequence: “de”.

Malformed byte sequence: “dd”.

Malformed byte sequence: “f4”.

Malformed byte sequence: “e2”, “b5”.

Malformed byte sequence: “e2”, “bd”.

Malformed byte sequence: “f1”, “b5”.

Malformed byte sequence: “f6”.

Malformed byte sequence: “e3”, “b1”.

Malformed byte sequence: “e0”.

Malformed byte sequence: “e4”, “bc”.

Malformed byte sequence: “e7”.

Malformed byte sequence: “f3”.

Malformed byte sequence: “d8”.

Malformed byte sequence: “ae”.

Malformed byte sequence: “cf”.

Malformed byte sequence: “a9”.

Malformed byte sequence: “f1”, “b4”, “a8”.

Malformed byte sequence: “e3”, “ba”.

Malformed byte sequence: “ed”, “bf”, “bc”.

Malformed byte sequence: “f3”, “b9”, “a4”.

Malformed byte sequence: “f0”, “bb”, “b5”.

Malformed byte sequence: “f2”.

Malformed byte sequence: “ec”, “b2”.

Malformed byte sequence: “e5”.

Malformed byte sequence: “e6”.

Warnings

Document uses the Unicode Private Use Area(s), which should not be used in publicly exchanged documents. (Charmod C073)

Text run is not in Unicode Normalization Form C.

The “border” attribute is obsolete. Consider specifying “img { border: 0; }” in CSS instead.

NON-DOCUMENT-ERROR

Too many messages.

Chvacuum.com Desktop Performance

Last tested: 03/21/2018

Desktop Speed

69%

Leverage browser caching

Optimize images

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Enable compression

Minify CSS

Minify JavaScript

Desktop Resource Breakdown

Total Resources	73
Number of Hosts	16
Static Resources	55
JavaScript Resources	21
CSS Resources	3

Chvacuum.com Mobile Insights

Last tested: 04/26/2018

Mobile Usability

58%

Use legible font sizes

Size tap targets appropriately

Configure the viewport

Mobile Speed

61%

Eliminate render-blocking JavaScript and CSS in above-the-fold content

Leverage browser caching

Optimize images

Enable compression

Minify CSS

Minify JavaScript

Minify HTML

Mobile Resource Breakdown

Total Resources	65
Number of Hosts	18
Static Resources	47
JavaScript Resources	23
CSS Resources	3

Chvacuum.com Common Typos

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www.chvacuum.con

Chvacuum.com 真空技术网 - 专业研究真空技术及真空泵等真空设备的真空网

集真空理论与真空标准，真空泵、真空阀门等真空设备，真空检漏、密封及测量等真空技术，以及以真空镀膜、真空包装与真空干燥为主的真空应用为一体的真空行业网站。

Chvacuum.com Overview

Chvacuum.com Rank Summary

Chvacuum.com Website Safety

Chvacuum.com Rank History

Chvacuum.com Hosting Information

Chvacuum.com Domain Registration and Settings

Chvacuum.com HTML Check

Chvacuum.com Desktop Performance

Chvacuum.com Mobile Insights

Chvacuum.com Similar Audits

Chvacuum.com Common Typos