1. The agreement has legal effect only if it does not violate the mandatory provisions of the law. There is no special format, as long as it does not violate the law. Specifically:
(1) Ensure the legality of the content and not violate the mandatory provisions of the law;
(2) The content of the agreement should be concise and direct, and the rights, obligations, liabilities for breach of contract, conditions for termination of the contract, validity period and other factors should be clearly stipulated according to the type of agreement;
(3) The information of the parties to the agreement is true and accurate;
(4) Signature and seal are true.
2. Legal basis: Article 470th of the Civil Code of People's Republic of China (PRC).
The contents of the contract shall be agreed by the parties, and generally include the following clauses:
(1) The name and domicile of the party concerned;
(2) theme;
(3) quantity;
(4) quality;
(5) Price or remuneration;
(6) Time limit, place and method of performance;
(7) Liability for breach of contract;
(8) Methods for resolving disputes.
The parties may conclude a contract by referring to the model texts of various contracts.