PVC insulated cable and other compounds insulated cable will produce a large amount of toxic and acid smoke and gas when the cables catch a fire. They are harmful to people and cause death. LSZH cables (low smoke zero halogen cable or LSHF cable, low smoke halogen free cable) are insulated and sheathed with a special compound material that they have just a low emission of smoke without halogen when exposed to fire. BS EN 50525-3-41 and BS 7211 are referred for these ISZH power cables. The LSZH wire is normally used in the public building and indoors, such as rail network, cars, ships and tunnels. Jenuin is a professional lSZH cable manufacturer/supplier with many years' experience, buy high quality low smoke zero halogen / halogen free cable/wire from Jenuin!