Party constitution refers to the name stamp, which represents an individual and has the name stamp of a legal person. When a bank opens an account, the cheque should be stamped with the legal person's name seal, and the seal of the person in charge can be used for various purposes, such as representing the person in charge to exercise his relevant powers, personal name seal, personal salary collection, personal signature and so on. And six o'clock is a square seal, the size of which is equivalent to a side length of 20 mm.