21ic交易网是中国最大的IC库存、采购及交易平台，数千家IC及电子元器件供应商每日在网站发布最新库存信息。网站目前拥有超过50万注册会员，库存总数量超过8000万条，同时，作为中国最早提供芯片器件手册（datasheet）PDF下载的网站，拥有超过300 IC PDF资料，每天平均更新数百个。为各类电子行业的研发、生产、制造、销售等公司提供最专业的服务。
Keywords are search requests to search engines that people use to find some information. Keywords on a web page reflect what the page is about. Below are the keywords the site. Green line represents the frequency of keyword usage on the site.
Homepage links
Internal - 3869
External - 124
Internal links from the site's home page define the general site's sections and serves as one of the most important factors of site ranking. External links tie the site with other sites and determines the site's theme. Relation of external links to internal links influences the distribution of the site's rank for search engines. It's desirable that the amount of internal links prevail.
