Polyethylene. Commonly known as pearl cotton, it is a high foamed polyethylene product made of low density polyethylene. It is an advanced protective packaging material in the world. It is light, flexible and easy to bend, which overcomes the shortcomings of ordinary styrofoam, such as brittleness, easy deformation and difficult recycling. Epe also has the characteristics of heat preservation, heat insulation, sound insulation, friction resistance and corrosion resistance. The composite products made of it and aluminum-plated film have excellent anti-infrared and anti-ultraviolet ability, and are essential supplies for many refrigeration equipment and outdoor sunshade. The pipes made from it are widely used in air conditioning, baby carriages, children's toys, furniture, water heating and ventilation and other industries.