In contrast, the purchase and sale contract is a broader concept, which includes supply, procurement, pre-purchase, combination of purchase and sale, cooperation and adjustment. Simply put, a purchase and sale contract is an agreement that one party transfers the ownership or management right of a commodity to another party, and the other party pays the price. Among them, the supply contract is mainly a contract signed between organizations to implement the national material distribution plan; A pre-purchase contract is a contract agreed to be performed in the future; A joint purchase and sale contract is a contract to sell a certain commodity to the other party while buying the other party's goods; An adjustment contract is a contract concluded by both parties to adjust the surplus and deficiency.
Generally speaking, the main difference between the two is that the purchase contract is mainly used to determine the relationship between supply and demand, and the purchase and sale contract may also involve the sale of some goods at the same time, so its forms are more diverse and its coverage is wider.