Legal subjectivity:

It is generally valid if a legal person does not sign and affix an official seal, unless otherwise provided by law or otherwise agreed upon by the parties. The legal representative may choose to sign, seal or fingerprint the contract in accordance with the law. The above methods are valid unless there are special provisions or agreements. Legal objectivity:

Article 490 of the 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 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.