低卤素而无卤素低烟雾阻燃p

halogen acid is less than 5mg/g, Follow halogen cable the smoke densitny is larger than 30% For halogen-free low smoke cables the smoke density is larger than 60%. The cables have the same dimensions as PVC insulated cables. For low halonger cables the insulation should be halongen-free low smoke poly olelln or PE or XLPE. For low halogen cables the inner and outer sheath should be low smoke polyolefln sheath material. For halongen-free low somke cables the inner sheath should be low halongen low smoke or halongen-free low smoke polyolefln smoke polyolefln sheath materical .The outer sheath should behalohe-free low smoke polyoefln material.For anti-termite cables the sheath should be anti-termite halogen free low smoke sheath materialType DDZ-low halogen low smoke flame retardant WDZ-Halogen-free low smoke flame retardant WDZY-halogen-free low smoke flame retardant anti-termite Y-Polyolefin insulation or sheath WDZA-Halogen-free low smoke flame retardant category A WDZB-Halogen-free low smoke flame retardant category B FY-WDZA Halogen-free low smoke anti-termite flame retardant category A FY-WDZB Halogen-free low smoke anti-termite flame retardant category B