If the name on the purchase contract is inconsistent with the seal, generally the name on the seal shall prevail. According to Article 490 of the Civil Code, if the parties conclude a contract in the form of a contract, the contract shall be established when both parties sign, seal or fingerprint the contract. Before signing, sealing or fingerprinting, one party has performed its main obligations and the contract is established when the other party accepts it. Laws and administrative regulations stipulate or the parties agree that a contract should be concluded in written form. If the parties do not use written form but one party has performed its main obligations and the other party accepts it, the contract is established. Article 502 stipulates that a contract established in accordance with the law shall take effect from the time of its establishment, unless otherwise provided by law or otherwise agreed by the parties. Article 490 of the "People's Republic of China and Civil Code" If the parties conclude a contract in the form of a contract, the contract shall be established when both parties sign, seal or fingerprint. Before signing, sealing or fingerprinting, one party has performed its main obligations and the contract is established when the other party accepts it. Laws and administrative regulations stipulate or the parties agree that a contract should be concluded in written form. If the parties do not use written form but one party has performed its main obligations and the other party accepts it, the contract is established.