在政府采购过程中,尽管采购的交易方式更多地表现为群体性,但它终究是由市场体系中的一个个具体交易行为构成的,它同样需要通过许多种合同关系来联结和保证。无论是WTO《政府采购协议》的签订,还是政府采购格式化合同的确立;无论是定点采购的长期合同实施,还是政府采购谈判中购买短期合同达成等,都应遵循这一要求,即政府采购需通过不同的合同方式来 In the process of government procurement, although the transaction patterns of purchasing are more collectivistic, after all, it is constituted by one specific transaction in the market system. It also needs to be linked and guaranteed by many kinds of contractual relations. Whether it is the signing of the WTO Agreement on Government Procurement or the establishment of a format contract for government procurement, the implementation of long-term contracts for the purchase of fixed-point procurement or the purchase of short-term contracts in the negotiation of government procurement should follow the requirement that government procurement Through different ways of contract