Legal subjectivity:

The contract is invalid only if Party A has its seal. The law stipulates that a contract is established after both parties sign or seal it. If the other party is a company or legal person, the contract is established after the other party signs or seals it. However, if there is only one party's seal and the other party does not sign, seal or fingerprint, the contract will be invalid. Article 490 of the Civil Code stipulates that 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. Legal objectivity:

Article 143 of the "People's Republic of China and Civil Code" is valid for civil legal acts that meet the following conditions: (1) The actor has the corresponding capacity for civil conduct; (2) ) The expression of intention is true; (3) It does not violate the mandatory provisions of laws and administrative regulations, and does not violate public order and good customs. Article 469 of the People's Republic of China and Civil Code: The parties may conclude a contract in written form, oral form or other forms. Written forms are contracts, letters, telegrams, telexes, faxes and other forms that can tangibly express the content contained therein. Data messages that can tangibly express the content through electronic data exchange, email, etc., and can be retrieved at any time, are deemed to be in written form.