... -jamming 2, flame-retardant 3, anti-wear 4, light weight, easy to install 5, corrosion resistance 1).Durable, in ... ).Retardant, low smoke and low gas,high resistance to impact force, acide and so on.3).High ... oxygen value, good combustion resistance, self extinguished.4).Smooth surface, light insulating medium, environmental and beautiful.5 ... depandes on the thickness and quantity. PVC channel