Generally, when purchasing materials and commodities, the warehouse keeper should fill in the receipt form in triplicate, one for retention, one for the finance department and one for the buyer. After checking the quantity on the invoice with the actual warehousing quantity, fill in the receipt, and both parties sign the receipt without issuing another invoice. ? The warehousing of finished products and semi-finished products produced by ourselves is basically the same as in the past, except that it is handled by the production department and the warehouse keeper. The finished product will not be invoiced for the time being, but will be invoiced when it is sold.