When the bid winning method with the lowest evaluated bid price is adopted to determine the bidding project of the winning bidder, the tenderee shall prepare the early warning price of the project cost on the basis of the budget price of the bidding project, according to the following basis: "the lowest control unit price of engineering materials and equipment determined by the tenderee" and "the lowest control line standard for bidding quotation of local construction projects". The cost early warning price should include the risk lump sum fee (the risk lump sum coefficient should be the same as the project budget price).

2, the tenderer shall, after the completion of the preparation of the cost warning price, before sending it to the bidder, report the cost warning price book to the municipal construction project cost management station (hereinafter referred to as the municipal cost station) for the record.

3. The cost warning price (including electronic documents) filed by the cost station shall be announced to the bidder at least 5 days before the deadline for bidding, and the lowest control unit price of engineering materials and equipment and the highest control price of the bidding project shall be announced at the same time.

4. For bidders, "cost early warning price" is an important reference for the final project quotation.