The winning standard of book bidding is discount standard. According to the relevant public information, the winning bidder shall provide the promised service, and the purchaser with inadequate service has the right to reduce the procurement volume of the winning bidder. 1.4 If the winning bidder is found to have a bad record, the purchaser has the right to cancel the qualification of winning the bid or terminate the procurement contract, and the number of winning bidders will decrease in turn, while the bidders with lower rankings will not increase or decrease. The discount is not higher than 70%.