Legal analysis: A private seal has no legal effect. Because the seal can be copied. A contract signed with a private seal will not be recognized by the court during a lawsuit, so you don’t have to worry about others taking the seal or forging it to sign the contract. The name seals of the company's legal persons and financial personnel are not private seals, but official seals (public personal seals). When used, they must be used together with the company's official seal. It is useless to seal them separately.
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.