请 登录 或 免费注册。
它非常的自由，你可以免费地使用网站上所有的设计，向全世界分享你的代码，对别的的代码进行改进，而这一切你都无需注册和登录，网站资源的质量需要你我共同维护。
It's so free that you can use all patterns for free, and modify all patterns with out register or login. Quality of the shared environment need you and I worked together to protect.
首次登录必须先进行注册(免费)，注册成功后，方可购买招标文件。
For the first time of login, a registration (free of charge) is needed and only after successful registration, Bidder can purchase Bidding documents online.
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