There are several bidding models

There are five bidding modes I***. As follows: 1. Public bidding. Usually refers to, the bidder in the public media in the form of a tender notice, invite unspecified legal persons or other organizations to participate in the bidding, and to the eligible bidders in the selection of the winner of a bidding mode; 2, invitations to tender; 3, competitive negotiations. Generally refers to, the purchaser or purchasing agent, directly invite more than three suppliers, the way to negotiate on procurement matters; 4, than the selection; 5, BOT. also known as build, operate, transfer.

Legal basis

"Chinese People's **** and the State Bidding Law" Article 3 must be tendered for construction projects are mainly: (1) large-scale infrastructure, public utilities and other projects related to the public **** interests of the community, public safety; (2) the use of state-owned funds to invest in whole or in part, or state-financed projects; (3 ) The use of international organizations or foreign government loans, aid funds for the project.

Mark of Conformity.