1. The bidder must participate in the first round of negotiations and submit written negotiation results and relevant information.

2. The bidder must submit the second round of quotation documents and business negotiation plans to the purchaser within the specified time. These quotation plans must be further specific based on the first round of quotations, including Specific details on price reduction, delivery time, service guarantee, etc.

3. Bidders must ensure the transparency of their second-round quotations and avoid excessive price increases or price reductions to avoid affecting fair competition.

4. After receiving the second round of quotations from all bidders, the purchaser will review and compare them and finally select the bidder to cooperate with it.

5. The specific requirements for the second round of quotations can be adjusted and supplemented accordingly according to the nature and requirements of different procurement projects.