Legal analysis: the signing of a contract is not as legal as the legal representative. The key is that the contract should be sealed and the signatory should have a power of attorney from the legal representative.

Legal basis: Civil Code of People's Republic of China (PRC).

Article 61 In accordance with the law or the articles of association of a legal person, the person in charge of civil activities on behalf of the legal person is the legal representative of the legal person.

Article 490 Where the parties conclude a contract in the form of a contract, the contract is formed 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.