ADSS cable is loose tube stranded. The fibers, 125μm,are positioned in a loose tube made of a high modulus plastic. The tubes are filled with a water-resistant filling compound. The tubes and fillers are stranded around a FRP as a non-metallic strength member into a compact and circular cable core,and the cable core is wrapped with a layer of Kevlar. Between the Kevlar yarn and the loose tube, water- blocking material is applied to keep the cable compact and watertight. Final the cable is completed with a polyethylene (PE) or AT outer sheath.