Copper bonded steel grounding conductor has better performance in mechanical properties, corrosion resistance, electrical performance and life cycle.in large grounding area or long distance grounding, The length of copper bonded steel rod is less than 6 meters, when laying a large area horizontally, it needs to be connected every 6 meters, the huge number of welding joints will cost a lot of man-hour, which will increase the project time and material cost. According to this weakness, Sunlight Company have developed copper bonded steel round wire with 100m/roll(customized available).