蝉知门户系统（changezhiEPS）是一款开源免费的企业门户系统，专为企业营销设计！它内置了文章、产品、论坛、评论、会员、博客、手册等功能，后台操作简洁方便，前台界面美观大方。(Cicada portal system (changezhiEPS) is an open source free enterprise portal system designed for business marketing. It is built with articles, products, forum