Signature or seal is a selective relationship, that is, signature, seal or both can be used at the same time. These three situations have the same significance for the establishment of the contract. When actually signing a contract, people often attach importance to the function and significance of stamping, and some even think that stamping is more important than signing, which is actually a misunderstanding. The use of the seal (namely, the seal) is equal to the signature of the seal owner (namely, the name of the seal), and the effectiveness of the seal is equal to the effectiveness of the signature. The reason why the seal has the function of proof is that the seal can replace, can repeatedly replace the signature, and sometimes has the function of saving labor. Because the seal is easy to be forged, the nominal owner of the seal (that is, the owner of the seal with a name on it) is easy to be separated from the actual controller, so the probative force of the seal is essentially lower than that of the signature. More attention should be paid to signature in trading activities, because the certainty of the relationship between signature and signer is far greater than that between seal and signer. As long as the other party signs in person, the validity and probative force of his signature can be guaranteed to a considerable extent.
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.