Tongwei Electric Haian Co., Ltd., a subsidiary of Tongwei group, is located in the high- -tech zone of Haian County,Nantong, Jiangsu province. It is located next to the Qiyang highway, G204 and G328 national road. With 50 thousand tons sea terminal, airport and railway hub around the city. It is a professional manufacturer of aluminum and steel shell matched with GIS high voltage switch. The company has factory building area 26000 square meters, with the investment of 150 million Yuan for the first stageo And the annual production capacity could be 300 million Yuan for GIS welded shell. The company has the production license, complete quality assurance system and a large number of professional talents for producing D1 and D2 pressure vessels.

The company has advanced production and testing equipment: automatic argon arc welding production lines, X-ray real-time imaging detection system, 10 X 2.5m large CNC machining center, TKP6513 CNC boring and milling machine. Other advanced testing equipment such as SF6 detection system, Helium leak detect test device and ultrasound machines were wild used in the production process, to ensure the quality of products stable and reliable. We guarantee providing the good enough products to State Grid.