Plastic bags, plastic bags, are bags made of plastic (commonly used plastics are polypropylene, polyester, nylon, etc.). ) is the main raw material. They are indispensable items in people's daily life and are often used to hold other items. It is widely used because of its advantages of low price, extremely light weight, large capacity and easy storage, but it is banned from production and use in some countries because of its shortcomings such as extremely long degradation cycle and difficult treatment.