1. The parties reach consensus on the main terms of the contract;
2. The parties shall conclude a contract in writing, including contract, letter, telegram, telex, fax, etc.
3. Signature, seal or fingerprint of each party, each party holds one copy.
legal ground
Article 469 of the Civil Code of People's Republic of China (PRC)
The parties may conclude a contract in writing, orally or in other forms.
Written form refers to contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the contents contained.
A data message that can tangibly express its content through electronic data interchange, e-mail, etc. , and can be retrieved at any time, are considered in writing.
Article 490
If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.
A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.