There must be at least four.

Warehouse acceptance, qualified stamp.

Brought back by the warehousing personnel, one copy is kept by the workshop statistics, and the other copy is kept by the delivery personnel.

There is also a copy to be sent to the production department, so that they can plan the next production plan according to the quantity of each variety.

At the end of the month, check with the workshop to see if there is any discrepancy in quantity. If not, you can make a statement.