I am also honored to be a printer. Let me answer for you. If it is a well-known product, this can't be sloppy. Without the certificate, the machine will be confiscated. If the quantity is too large, it may be changed to "make it". The first is: business license of enterprise legal person; Food hygiene license; Drug production license; Drug gmp certificate; Famous brand certificate; Organization code certificate; Trademark registration certificate (famous trademark); Power of attorney. I want to know what you print. However, some certificates may not exist. That's usually the case. Without these, 100% would be counterfeit money.