Huadong Holding Group Co., Ltd., is a leading manufacturer of anti-vandal push button switches and high voltage transmission and distribution products in China. We have 7 subsidiaries. Our main products are anti-vandal push button switch,power transformer,distribution transformer, switchgear, substation, insulator, cutout fuse, surge arrester, vacuum circuit breaker, load switch,earthing switch,inverter and others, which are sold all over the world. Quality is the life of us. Welcome to our ...