On December 7, 2010, the 1100kV rod-shaped pillar porcelain insulator (height 10500mm, bending strength 16kN, creepage distance 34100mm) passed the seismic test of seismic intensity of 8 and 9 degrees in the National Construction Engineering Quality Supervision and Inspection Center
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.