A purchase and sale contract is an agreement where one party transfers the ownership or management rights of goods to the other party, and the other party pays the price.

Purchase and sale contracts include supply, procurement, pre-purchase, purchase and sale combination, cooperation, and adjustment.

A supply contract is a contract signed between organizations to implement the national material distribution plan.

A procurement contract is a contract signed by commercial, industrial or other economic organizations to purchase raw materials or products for production or operation.

A pre-purchase contract is a contract that stipulates future performance.

A purchase and sale contract is a contract to sell certain goods to the other party while purchasing the other party's goods.

A cooperation contract is a contract between two parties to exchange materials for their respective needs.

An adjustment contract is a contract signed by two parties to adjust surpluses and shortages.

A purchase and sale contract transfers the ownership or management rights of the subject matter, and is a bilateral, paid, and consensual contract. Among them, the supply contract must be signed in accordance with the national plan.

The main terms of the contract include the name of the goods, quantity, quality and packaging quality, price, delivery period, liability for breach of contract, etc. [