GJFJKV cable structure is the fiber surface placed on the arnylon strengthening elements and then extruded sheath made of sub-unit, sub-unit and non-metallic strengthening parts FRP (and may have the pad) twisted synthetic round, between the cable core and protection of a layer of dry waterproof belt, finally extruded PVC(or LSZH) sheath into a cable.Each cable contains aramid reinforced fiber, good bending, no ointment, clean, easy to construction and connection. The fiber in the subcable is a tight-fitting design with separate reinforcing elements and sheathing to prevent damage caused by environmental and mechanical stresses. Low smoke and low halogen flame retardant sheath, with flame delay and self-flameout, suitable for room, cable shaft and wall wiring and other indoor environment. Low smoke halogen-free flame-retardant polyolefin sheath, UV resistant, waterproof and mildew resistant, environmental stress cracking resistant; And no acid gas release, no corrosion of equipment room, suitable for indoor and outdoor use or high flame retardant level of indoor environment (such as ceiling wiring, open wire wiring, etc.).