As a professional contactor, AC contactor, modular contactor, auxiliary contactor, 3TD mechanical interlocking contacor, contact block, contact type relay, general relay, solid state relay, pcb relay, thermal relay, magnetic relay, air conditioning relay, time relay, counter relay, relay socket, starter, magnetic starter, cam starter, delta reduced voltage starter 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, contact block, 3TD mechanical interlocking contacor and accessories in China. As an enterprise certified by ISO9001 system strictly, we have also got many safety certificates, su-ch 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, contact block, 3TD mechanical interlocking contacor reach all over the world.