OPGW (Optical Fiber Composited Overhead Ground Wire), a tech-product emerged in power industry in 1970s, is used to connect power and communication that are the world’s most important public networks, and has double functions of power ground wire and optical fiber communication. With the breakthrough of key technology, high-intensity fiber, fill-jelly, seamless aluminum tube, aluminum-clad wire, and other advanced material are adopted for OPGW.