The "Regulations on the Tendering and Bidding Management of Agricultural Capital Construction Projects" stipulates that the estimated price of a single construction contract is more than 2 million yuan; the estimated price of a single contract for the purchase of instruments, equipment, and materials is more than 1 million yuan. ; For the procurement of survey, design, supervision and other services, if the estimated price of a single contract is more than RMB 500,000; if the estimated price of a single contract is lower than the above provisions and the total project investment is more than RMB 30 million, public bidding must be conducted.