According to the query Huaru.com learned that the procurement must sign a contract. Procurement contract is the supplier and sub-supplier by consensus, in accordance with the principle of equality, voluntary agreement to sign the legal documents, so as to reach the supply and demand relationship, the contract should be in accordance with the contract to fulfill their contractual obligations. It is recommended to sign a written contract, in order to avoid the occurrence of verbal.
Contract (hétong or hétóng) is an equal subject of natural persons, legal persons, other organizations set up between, it is a market economy conditions to regulate the flow of property department of the agreement, the contract law of each country to regulate the contract is a contract of claims, and the broader contract should also be the basic basis of the relationship.