recycled hdpe granule granule, which looks as opaque as wax, floats on water because its specific gravity is even lighter than that of water, ranging from 0.941 to 0.960. It is composed of ethylene copolymerization. recycled hdpe granule is acid-alkali resistant and organic solvent resistant, and has excellent electrical insulation capability. It still retains certain toughness at low temperature. The surface hardness, tensile strength, rigidity and other mechanical strength are higher than LDPE, close to PP, tougher than PP, but the surface finish is not as good as PP.