There are usually pockets in supermarkets. Sealed bag is a kind of bag packaging product that can be sealed. A sealed bag is what we usually call a self-sealing bag. There is a groove at the mouth of the bag, which can be sealed by itself. Pocket sealing is a new type of packaging product, which is very popular now. Bag sealing is developed on the basis of the original plastic bag. Bag-sealed products have made many improvements on ordinary plastic bags, and more and more of them have made their own uses and advantages.