As a professional colling fan, switchboard lock, bus-bar insulator manufacturer, exporter, supplier and factory in China, Hongda Electric Group Co., Ltd., was founded in 1983 and locates in LiuShi ---The Electriacal Capatal of China. Hongda is one of the leading manufactures specializing in developing and producing all kinds of high or low voltage al products, bus-bar insulator, bus-bar insulators and accessories in China. As an enterprise certified by ISO9001 system strictly, we have also got many safety certificates, such as CB, SEMKO, FIMKO, ESC, CCC, VED, UL, CE etc. As the professional manufacturer and exporter, we have inter- national marketing experience of ten years. Our products, bus-bar insulator, bus-bar insulators reach all over the world.