Private seal refers to a private seal, representing an individual. In the past, it was mostly used to collect signatures, and some paintings were often stamped with personal seals to indicate the identity of the author. Since private seals are easy to be forged, handprints and signatures are now used to indicate identity documents and signatures instead of private seals.

Official seal refers to the seal used by agencies, groups, enterprises and institutions. It is generally managed by the office and the seal is used with the consent of the legal representative.

Financial seal refers to the special financial seal that agencies, groups, enterprises and institutions must use for financial settlement, issuing receipts and invoices to the other party, or for bank printing. Able to assume all financial-related obligations on behalf of the company and enjoy all financial-related rights. It is generally managed by the company's dedicated financial personnel, which can be the financial director or cashier, etc.