Legal analysis: As a company, the signature of the legal representative or the official seal of the company has the same legal effect and is not invalid due to the lack of the signature of the legal person or the official seal of the company. During the signing process of the contract, both parties can agree on how the contract will take effect.

Legal basis: Article 490 of the "People's Republic of China and Civil Code" Where the parties conclude a contract in the form of a contract, the contract is 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.