The legal person's signature is not sealed, but the legal person's signature represents the true meaning of its representative unit, and the contract can be established; Or the contract has been actually performed without seal, and both parties have no objection to the performance of the contract, and the contract is established. This contract shall come into effect upon signing.

legal ground

Article 490 of the Civil Code of People's Republic of China (PRC)

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.