Small-scale supermarkets will sell many expired foods or expired foods at low prices, but some unscrupulous merchants just put them behind fresh foods. For those buyers, they will take it all at once when they buy in large quantities, and they will not care too much about the later production date, so they can also sell it, but this way is generally illegal. Most large supermarkets are related to the way they sell food, so there will be orders from superiors to update the food that is about to expire, and do a good job of supervision, and deal with the expired food according to the relevant provisions of national laws. Generally speaking, manufacturers will destroy it after receiving a refund, or sell it as fertilizer feed at a low price.
For many supermarkets, expired food is generally not sold, but sold to farmers at low prices or contacted manufacturers for recycling, or destroyed by themselves. For large supermarkets, expired food will be sold at a low price in advance. Hold promotional activities, etc. Once the shelf life has passed, you must destroy it off the shelf or contact the manufacturer for recycling, so as to ensure that your losses are minimized as much as possible. There are also some black-hearted businesses that put expired food behind fresh food. Most people will look at the shelf life when buying, but they will only look at the shelf life of the outermost food, so they will get away with it, so everyone must look at the shelf life and production date when buying food. Many large supermarkets or supermarkets with conscience will destroy expired food, so you must carefully check the production date and shelf life when shopping.