This depends on the specific situation. Some factories print their own receipts. The name of the unit is printed on the receipt itself, and the numbers are consecutive. The receipt, return, and invalidation are all registered and recorded. , if this is the case, just go to the unit's financial department to verify and add the special financial seal and the payee's signature. If it is the kind that is printed and sold externally, without a signature and seal, it is difficult to tell. It is best to go to the unit's financial department to verify and add the special financial seal and the payee's signature.