High Density Polyethylene (High Density Polyethylene, referred to as "HDPE"), also known as low pressure polyethylene, is a kind of high crystallinity, non-polar surface is a certain degree of translucent. PE has excellent resistance to most domestic and industrial chemicals. HDPE is a highly crystalline, non-polar thermoplastic resin. High-density polyethylene is a white powder granular product, non-toxic, tasteless, it has good heat resistance and cold resistance, good chemical stability, but also has high rigidity and toughness, good mechanical strength. Dielectric properties, environmental stress cracking resistance is also good. The hardness, tensile strength and creep properties are better than those of low density polyethylene. Wear resistance, electrical insulation, toughness and cold resistance are good, good chemical stability, at room temperature, insoluble in any organic solvent, acid, alkali and various salts corrosion resistance; The film has low permeability to water vapor and air and low water absorption.