Legal subjectivity:

IOUs are valid if they are stamped with the financial seal and corporate seal. The financial seal, that is, the special financial seal, is a special seal used by each unit when handling unit accounting and bank settlement business. A legal person is not a specific person, but an entity. Therefore, the legal person seal is actually the official seal of the unit. Article 490 of the Civil Code: Where 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.