On July 8, 2010, the ± 500kV DC rod pillar porcelain insulator (height 9300mm, bending resistance 12.5kN, creepage distance 32960mm) was put into operation at Jingmen converter station
Tangshan High voltage Electric Porcelain Co., LTD., founded in 1952, is a subsidiary company of Beijing BBMG Group, one of China's top 500 enterprises. Tangshan High voltage electric porcelain Co., Ltd. is a power station electric porcelain product design, research and development, production manufacturers, is one of China's insulator arrester industry backbone enterprises, the annual output value of 300 million yuan, the product registered trademark "TD" brand.