Why are discounted snacks so cheap?

It is easy to sell cheaply because many of them are temporary goods, but the quality of the goods is strictly controlled. Expiration doesn't mean inferior quality, so I made a promotion at Haomai, and we will clean up the goods overdue within 30 days in time. At the same time, the shelf life of each product will be indicated below the price tag, which greatly facilitates customers to choose according to their needs.