It is of loose tube twisted structure. The fiber is combined into the loose tube produced with high modulus polyester material. The tube is filled with waterproofing compound. The loose tube (with filling rope) is stranded into compact cable core around the Fiber Reinforced Plastic (FRP). Space in the cable core is filled with waterproofing compound. An inner polyethylene sheath is extruded over the cable core. A suitable required of aramid yarn shall be applied over the sheathed cable core, if the aramid yarn is more than two layers, the direction shall be applied with opposite . Finally an polyethylene or anti- electrolytic corrosion outer sheath shall be extruded over the aramid yarn core to make a completed cable.