Legal analysis: only valid on specific occasions, and can be filed. For example, the company under its name can be filed in the industrial and commercial bureau, and the bank account can be opened in the bank for filing. In this way, this seal has the same legal effect as a handwritten signature.

Legal basis: Article 490 of the Civil Code of People's Republic of China (PRC). If the parties enter into a contract in the form of a contract, the contract shall be established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.