1. A contract with more than one party is not established if only one party signs it and all parties do not sign it;
2. If the contract is a multi-party contract, it depends on whether the specific content of the contract can confirm the rights and obligations of the signatory;
3. If only one party signs the contract, but it is authorized by the unsigned party or meets the conditions of agency by estoppel, the contract is valid.
legal ground
According to Article 490 of the Civil Code of People's Republic of China (PRC), which came into effect on 202 1 1.
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.