《中华人民共和国招标投标法实施条例》第二十六条招标人在招标文件中要求投标人提交投标保证金的,投标保证金不得超过招标项目估算价的2%。投标保证金有效期应当与投标有效期一致。《工程建设项目施工招标投标办法》(七部委局30号令)第三十七条招标人可以在招标文件中要求投标人提交投标保证金。投标保证金除现金外,可以是银行出具的银行保函、保兑支票、银行汇票或现金支票。投标保证金一般不得超过投标总价的百分之二,但最高不 “The People’s Republic of China Bidding Law Enforcement Regulations” Article Twenty-six tenders in the bidding documents require bidders to submit the bid bond, bid bond must not exceed 2% of the estimated bid price. Bid bond validity period should be consistent with the tender. “Tendering bidding method of construction projects” (seven ministries and commissions on the 30th order) Article thirty-seventh tenderee may require bidders in the tender documents submitted bid bond. Bid bond in addition to cash, it can be a bank issued by the bank guarantee, confirmation check, bank draft or cash check. Bid bond in general shall not exceed 2% of the total bid, but not the highest