Polyethylene plastic raw materials, plastic bags of the invention to human life brought great convenience, but more and more people do not know how effective environmental use, resulting in a plastic bag pollution globalization. We used plastic bags, there are two: 1. High density polyethylene is used in supermarket shopping bags, feels so cool, very hard. Without color when the bag is dim. 2. The low-density polyethylene, used for packaging food, feels very soft, transparent when relatively thoroughly. There is also a PP or OPP, the bag of bread and biscuits what material is very smooth, very transparent, but the seal is not good, there is no tension. There is also a number of composite materials, such as packaging is very beautiful (with milk and the like) are generally OPP and nylon composite. Recommendation: I hope that we (in the supermarket shopping, etc.) as much as possible not to use plastic bags, woven bags, etc. can be used reusable bags to be replaced. 

palabras clave: Plastic bags, Guiyang bags, plastic bags manufacturers,