，，。，。，，PVC。。，，，。。PVC。、。PVbraided pvpvc pvc air hose vs ruair conditioner pvc drain hosebberpvc air compressor hoseong>vs rubber vs polyurethane air hosec tubingC。。PVC，。，，、。，4，PVC，、，PVC，，PVC，。。braideair conditioner pvc drain hosed p<pvc air compressor hosepvc air hose vs rubberstrong>pvc vs rubber vs polyurethane air hosevc tubing4PVC，，，，，。。。， pvc suction hose pipe 4 inch .PVC（），PVC，，。4PVC、