根据竞争性招标程序发出的一项通知，邀请投标者在对合同进行投标之前参加资格预审。
A notice issued under competitive bidding procedures calling on bidders to prequalify prior to bidding on a contract.
未通过竞争性招标程序签署的合同数量由2004年的12904份下降为2009年的1117份。
Number of contracts that bypassed a competitive process decreased from 12,904 in 2004 to 1,117 contracts in 2009.
资格预审邀请书：根据竞争性招标程序发出的一项通知，邀请投标者在对合同进行投标之前参加资格预审。
Invitation to prequalify: a notice issued under competitive bidding procedures calling on bidders to prequalify prior to bidding on a contract.
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