1.PVC insulated sleeve takes PVC resin as the major raw material, added with stabilizer, antioxidant, anti-shock agent. PVC cable sleeveProduct properties:PVC-U pipe of wire can endure the pressure, so it can be laid hidden or open in concrete. Moisture-proof, acid and alkali resistance: PVC sleeve is not liable to rust, acid resistant, alkali resistant and oil resistant, so it?s the best choice ...