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❌ 4 criteria to solve
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21IC中国电子网 - 中国电子工程师的首选网站
http://21ic.com
21IC中国电子网， 中国电子工程师的首选网站(嵌入式,单片机,DSP,EDA,测试测量,元器件,医疗电子,智能电网)
http://21ic.com
21IC中国电子网 - 中国电子工程师的首选网站
21IC中国电子网， 中国电子工程师的首选网站(嵌入式,单片机,DSP,EDA,测试测量,元器件,医疗电子,智能电网)
No 301 redirects are in place to redirect traffic to your preferred domain. Pages that load successfully both with and without www. are treated as duplicate content! Not all versions of your page point to the same URL.
| URL | Resolved URL |
| http://21ic.com | http://www.21ic.com/ |
| https://21ic.com | HTTP header error |
| http://www.21ic.com | http://www.21ic.com/ |
| https://www.21ic.com | HTTP header error |
ⓘ The owner has associated the following topics to the website.
❌ 21ic.com website speed is slow. Page speed is important for visitors and search engines.
Get insights to improve your page loading time.
This domain loads at the median speed of 0.9 seconds.
21ic.com is faster than approximately 82 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.
A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.
ⓘ This website is ranked #20.468 by Alexa.
This rank is traffic based. The lower the rank is, the better the domain is ranked.
| Country | Rank |
 China |
#1.922 |
Mobile Rendering
This website doesn't seem to be optimized for Mobile Visitors.
Phone
Tablet
A good text to HTML ratio is anywhere from 25 to 70%.
This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.
Great, we found headings on this page.
However, you have not defined a top level heading, or <H1>. It is used to define the most important heading.
We recommend using one top level heading to set up a semantic relationship between that heading and the remainder of the content on a page. It clearly describes to the readers and the search engines what it is about.
For a better readability, only the first 20 <H2> tags are shown below.
| 2nd level heading |
| 芯闻号 (2) |
| 行业动态 |
| 图酷 |
| 评测 (2) |
| 编辑视点 |
| 频道分类 |
| 资讯 |
| 新品 |
| 应用 |
| 技术专访 |
| 基础知识 |
| 热门板块 |
| 编辑推荐 |
| 厂商 |
| 十大热门 |
| 公开课 (2) |
| 在线研讨会 |
| Tı在线培训中心 |
| 外包 (2) |
| 最新职位 |
| 3rd level heading |
| 汽车及5g领域的技术动向和电容器推荐 |
| 回顾2019，英特尔在人… |
| Ev·车载解决方案 |
| 主要制品 |
| 使用案例/使用程序/用途 |
| 下载（产品手册/pdf/白皮书） |
| 模拟与混合信号 |
| 微处理器 mcu |
| 厂 商 专 区 |
| 挑战高薪，等你加入 |
| 互利共赢 21ic项目交易平台诚意相邀 |
We found 0 images on this website.
Great,
0
ALT attributes are missing on your image tags.
109 of which have the nofollow attribute, meaning that their destination should not be afforded any additional weight or ranking by search engines.
For a better readability, only the first 50 internal links are shown below.
For a better readability, only the first 50 external links are shown below.
| ⓘ Domain Registrar | ALIBABA CLOUD COMPUTING (BEIJING) CO., LTD. |
| ⓘ Registration Date | 01/10/2000 24 years, 3 months, 11 days ago |
| ⓘ Last Modified | 07/30/2018 5 years, 8 months, 24 days ago |
| ⓘ Expiration Date | 01/10/2022 Expired |
Others (7.6%)
SOCIAL MEDIA PRESENCE
It's a good start.
You should focus on obtaining more social shares to improve your overall SEO strategy. Check out these tips to build a better social media presence.