Degradable plastic bags are mainly made of polyethylene plastics, mixed with photodegradants and calcium carbonate and other mineral powders, also known as photodegradable plastic bags. This plastic bag is decomposed under the action of sunlight. But the decomposed polyethylene still exists in the natural environment. Although the white pollution cannot be seen in the sight, the white pollution is still invading our surrounding environment in the form of fine particles. Microbial degradable plastic bags are plastic bags made of polyethylene plastics mixed with biodegradation agents such as starch, also known as biodegradable plastic bags. This kind of plastic bag is mainly decomposed by microorganisms, and the effect is the same as that of photodegradable plastic bags. Biodegradable shopping bags All biodegradable plastic bags are mainly made of corn as raw material and fermented polylactic acid. After degradation, they are completely biodegradable materials that turn into carbon dioxide and water. They are real biodegradable bags and can be said to be a substitute for plastics. Products can fundamentally solve the problem of plastic pollution, rather than cure the symptoms. Formally produced plastic bags must be marked with the standards and materials used in the above picture. Among them, the recycling mark indicates that plastic bags can be recycled; the 04 in the recycling mark is a special recycling digital mark for low-density polyethylene (LDPE); the >PE-LD< below the recycling mark indicates the production raw materials of plastic bags; The “GB/T 21661-2008” to the right of the words “shopping bag” is the production standard for plastic shopping bags. Therefore, biodegradable shopping bag manufacturers remind you to buy biodegradable or compostable plastic bags. First, you need to check whether there is a nationally-regulated plastic bag logo under the bag, and then judge according to the plastic bag production raw materials below the environmental protection logo. Commonly used The raw materials of biodegradable or compostable plastic bags are PLA, PBAT.