All kinds of products in the supermarket have warehousing registration information, and the production date is of course included. Rational operators should know when the goods must be sold out, and start to do various promotional activities a few months before the expiration of the goods, which is a common special sale in our lives. According to the quantity of goods in stock and the promotion situation, timely adjust the promotion activities to minimize losses. It is true that the products are out of date, because they are not sold in time. Supermarket operators should adhere to the concept of being responsible to consumers and deal with products legally, such as destroying them. Thank you, I hope it will help you!