... .PVC cable trunking, cable duct, conduit 2.have different color 3.Material: PVC(UPVC) 4.Provide OEM tooling service pvc trunking 1.pvc ... pressure ability, high impact resistance3).Fire-resistance: Flame-retardant pvc resin,highly combustion-retardant,quickly self-extinguishing4).Corrosion resistance : moisture ... push-pull,installed with solvent cementing and threading joinin PVC CABLE WIRING DUCT