What are the benefits of plastic bags?

Advantages of plastic bags: \ r \ nFirst, they are light and heavy \ r \ n \ r \ Plastic bags are made of polymer materials. Common materials are polyethylene PE, polyvinyl chloride PE, polypropylene PO, etc. Plastic bags made of these materials are light and heavy, which are more convenient to package than traditional baskets and baskets. \ r \ nSecond, the cost is low and almost free \ r \ nPolyethylene plastic bags and PVC plastic bags are extremely low in cost and can be provided to consumers almost free of charge. This is also one of the main causes of white pollution. \ r \ nThird, color printing beautifies commodities \ r \ nAll kinds of commodity packages in supermarkets show the charm of packaging, which can not only beautify commodities, but also enhance their value. \r\n Fourth, food preservation \r\n Using plastic bags to seal food can prolong the storage time, such as plastic wrap, or filling nitrogen to seal food, such as puffed food, and so on. \ r \ Plastic bags 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 forbidden to be used and produced in some countries because of its shortcomings such as extremely long degradation cycle and difficult treatment. \ r \ nHarm of plastic bags: \ r \ nThe recycling value of plastic bags is low, and they are scattered on urban streets, tourist areas, water bodies, highways and railways, which not only causes "visual pollution", but also has potential hazards. Plastic has a stable structure, is not easily degraded by natural microorganisms, and does not separate in the natural environment for a long time. This means that if the waste plastic garbage is not recycled, it will become a pollutant in the environment for a long time and accumulate continuously, causing great harm to the environment.