cem.com
挂号的
页面分析更新日期:
2026/02/17 09:19:43
上次 Whois 更新日期:
2026/02/09 11:31:49
域名状态
挂号的
付款至
23.05.2028
可从
22.06.2028
×
![全屏网站截图]()
cem.com 网站截图
搜索引擎优化得分
59.59%
87
取得的分数
146
最高分
主要信息
标题: CEM Corporation
描述: CEM is the leading provider of microwave instrumentation for analytical and synthetic chemistry applications. Major application areas include acid digestion for elemental analysis, compositional testing of food products, peptide synthesis, and chemical synthesis.
关键词: CEM, Microwave, France, CEM μWaves S.A.S., Germany, CEM GmbH, Ireland, CEM Microwave Technology (Ireland) Ltd., Italy, CEM SRL, Japan, CEM Japan K.K., United Kingdom, CEM Microwave Technology Ltd.
页面编码:
utf-8
页面文件大小: 135 KB
服务器信息
IP: 3.212.10.187
地点: United States,US,Ashburn,20149,39.0469,-77.4903,America/New_York
HTTP服务器: apache/2.4.58 (ubuntu)
编码: utf-8
元标签列表
- charset: utf-8
- name: title content: CEM Corporation
- name: description content: CEM is the leading provider of microwave instrumentation for analytical and synthetic chemistry applications. Major application areas include acid digestion for elemental analysis, compositional testing of food products, peptide synthesis, and chemical synthesis.
- name: keywords content: CEM, Microwave, France, CEM μWaves S.A.S., Germany, CEM GmbH, Ireland, CEM Microwave Technology (Ireland) Ltd., Italy, CEM SRL, Japan, CEM Japan K.K., United Kingdom, CEM Microwave Technology Ltd.
- name: robots content: INDEX,FOLLOW
- name: viewport content: width=device-width, initial-scale=1
- name: format-detection content: telephone=no
- name: google-site-verification content: yr1xsacqKakiWvT_gV53sJnWIjTOd0eYZ6CVbO-fwhc
内部链接
外部链接
查询信息
domain_name: cem.com
update_date: 2025-12-24T20:28:39Z
update_time: 1766608119
creation_date: 1997-05-22T04:00:00Z
creation_time: 864273600
expiration_date: 2028-05-23T04:00:00Z
Whois 原始数据
Domain Name: CEM.COM
Registrar: Network Solutions, LLC
Domain Status: client transfer prohibited
Creation Date: 1997-05-22T04:00:00Z
Registry Expiry Date: 2028-05-23T04:00:00Z
Updated Date: 2025-12-24T20:28:39Z
Name Server: NS0.DNSMADEEASY.COM
Name Server: NS1.DNSMADEEASY.COM
Name Server: NS2.DNSMADEEASY.COM
Name Server: NS3.DNSMADEEASY.COM
Name Server: NS4.DNSMADEEASY.COM
REGISTRAR Contact: Network Solutions, LLC
>>> Last update of RDAP database: 2026-02-09T14:31:49Z
Robots.txt
User-agent:*
Disallow: /s3/*
Disallow: /catalogsearch/result/index/
Disallow: /literature
Disallow: /cn/literature
Disallow: /app/
Disallow: /bin/
Disallow: /dev/
Disallow: /lib/
Disallow: /phpserver/
Disallow: /composer.json
Disallow: /composer.lock
Disallow: /CONTRIBUTING.md
Disallow: /CONTRIBUTOR_LICENSE_AGREEMENT.html
Disallow: /COPYING.txt
Disallow: /Gruntfile.js
Disallow: /LICENSE.txt
Disallow: /LICENSE_AFL.txt
Disallow: /nginx.conf.sample
Disallow: /package.json
Disallow: /media/wellness/
Disallow: /php.ini.sample
Disallow: /RELEASE_NOTES.txt
Disallow: /lib/
Disallow: /*.php$
Disallow: /pkginfo/
Disallow: /report/
Disallow: /var/
Disallow: /catalog/
Disallow: /customer/
Disallow: /sendfriend/
Disallow: /review/
Disallow: /*SID=
Disallow: /checkout/
Disallow: /onestepcheckout/
Disallow: /customer/
Disallow: /customer/account/
Disallow: /customer/account/login
User-agent: SemrushBot
Crawl-delay: 10
User-agent: SiteAuditBot
Crawl-delay: 10
User-agent: *
Crawl-delay: 5
Sitemap: https://cem.com/sitemap.xml
Sitemap: https://cem.com/sitemap_de.xml
Sitemap: https://cem.com/sitemap_it.xml
Sitemap: https://cem.com/sitemap_cn.xml
Sitemap: https://cem.com/sitemap_fr.xml
Sitemap: https://cem.com/sitemap_ja.xml
Sitemap: https://cem.com/sitemap_es.xml
Sitemap: https://cem.com/sitemap_pt.xml
Sitemap: https://cem.com/sitemap.xml
Sitemap: https://cem.com/sitemap_de.xml
Sitemap: https://cem.com/sitemap_it.xml
Sitemap: https://cem.com/sitemap_cn.xml
Sitemap: https://cem.com/sitemap_fr.xml
Sitemap: https://cem.com/sitemap_ja.xml
Sitemap: https://cem.com/sitemap_es.xml
Sitemap: https://cem.com/sitemap_pt.xml
搜索引擎优化审核
技术搜索引擎优化
✓
响应代码
200
状态 200 正常 - 页面加载正确。
✓
字符编码
Page: utf-8, Header: utf-8
HTML 和标头之间的字符编码一致。
✓
页面尺寸
139150 bytes
页面大小可以接受快速加载。
!
资源
259 total
资源太多了。优化和组合文件以获得更好的性能。
✓
赫尔夫朗标签
11 hreflang tags
为多语言 SEO 找到的 Hreflang 标签。
✓
Robots.txt
Exists
找到 Robots.txt 文件。
✓
Sitemap
Declared in robots.txt
在 robots.txt 中声明的站点地图。
✓
HTTPS
Yes
已启用安全 HTTPS 连接。
✓
压缩
gzip
启用 Gzip 或 Zstd 压缩以加快加载速度。
✓
缓存
max-age=0, must-revalidate, no-cache, no-store
正确设置缓存控制标头。
✓
页面速度
7.90 ms
出色的加载速度。
页面搜索引擎优化
!
标题
CEM Corporation
标题太短。扩展到 30-60 个字符以获得更好的 SEO。
!
元描述
CEM is the leading provider of microwave instrumentation for analytical and synthetic chemistry applications. Major application areas include acid digestion for elemental analysis, compositional testing of food products, peptide synthesis, and chemical synthesis. Lenght:263
元描述太长。减少到 100-160 个字符。
!
H1 标题
0 found - ""
添加一个带有主要关键词的 H1 标题。
!
字数统计
217
内容很短。为了更好的 SEO，目标是至少 500 个单词。
!
规范标签
添加规范标签以防止重复内容问题。
✓
重复元
[]
未找到重复的元标记。
✓
关键词
CEM, Microwave, France, CEM μWaves S.A.S., Germany, CEM GmbH, Ireland, CEM Microwave Technology (Ireland) Ltd., Italy, CEM SRL, Japan, CEM Japan K.K., United Kingdom, CEM Microwave Technology Ltd.
元关键字集（注意：主要搜索引擎不使用）。
内容和用户体验
✓
语言
en
语言属性设置正确。
✓
图片
0 total, 0 missing ALT
所有图像都有正确的 ALT 文本。
✓
视口
width=device-width, initial-scale=1
为移动设备正确设置视口元标记。
!
打开图
Missing: og:title, og:description, og:image, og:url
添加缺少的 OpenGraph 标签以进行社交媒体共享：og:title, og:description, og:image, og:url
!
结构化数据
0 JSON-LD scripts
添加结构化数据 (JSON-LD) 以获取丰富的代码片段和更好的 SEO。
职位于 Google
搜索短语 - Google
| 位置 | 短语 | 页 | 片段 |
|---|---|---|---|
| 6 | /en/q-disc-s1.html |