The signature in the contract can be signed privately. If the party is a natural person, a personal seal may be used when signing; If it is a legal person, it should generally be signed by the legal representative. Stamp the official seal of the company. The private seal of the legal representative or authorized representative also has legal effect, but it is difficult to determine its authenticity in case of dispute. According to Article 490 of the Civil Code of People's Republic of China (PRC), which came into effect in 202 1 and 1, if the parties conclude a contract by contract, the contract is established when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. (8) Methods for resolving disputes.