PE protective casing materials are a high-tech product made from high-quality high-density polyethylene resin as the main raw material, with the addition of appropriate additives, processed and formed by extrusion. This product has characteristics such as corrosion resistance, aging resistance, impact resistance, high mechanical strength, long service life, and excellent electrical insulation properties, making it widely applicable in fields such as communication, underground high-voltage cable, and streetlight cable protective casings.