The cable adopts high-quality flame-retardant materials (XLPE/PVC/LSZH) for insulation and sheath, which meets the requirements of Flame Retardant Class A/B/C/D. When encountering open fire, it can quickly self-extinguish after leaving the fire source, effectively preventing the spread of flame and reducing the scope of fire damage. The flame retardant layer is designed with a special structure, which can isolate the flame from the conductor, avoid the cable from being burned through in a short time, and buy valuable time for fire fighting and emergency disposal.