Brief： Petroleum, the national electricity company, and gradually be widely used. http://www.chinagroundrod.com/

Copper bonded ground rod are mainly used in the grounding device. Due to its good conductivity, corrosion resistance, tensile strength, low prices, etc., Copper bonded ground rod can bewidely used, and have been recognized by the United States Institute of Electrical and Electronics Engineering (IEEE) standard, BS standard and International Electrotechnical Commission ( IEC) standards. In China, have been recognized in China Sinopec, China National Petroleum, the national electricity company, and gradually be widely used.  http://www.chinagroundrod.com/。