Legal analysis: the contract is stamped, but not signed. If the two parties conclude a contract in the form of a contract, the contract will be established as long as they sign, seal or press their fingerprints. Even if one party has fulfilled its main obligations before signing, sealing or fingerprinting, the contract is established when the other party accepts it.

Legal basis: 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.