Shanghai Dingyi Transmission Machinery Co., Ltd. is specialized in developing and manufacturing all kinds of reducers. We have passed ISO9001 quality certification. Our company has two hundred sets of advanced production and installation machines. Our main products include (R, K, F, S) series hard tooth surface gear reducers, MB series planetary friction mechanical speed variators, RV series aluminum alloy worm-and-worm reducers, WP series cast iron worm-and-worm reducers, (X, WB) series planet-cycloid reducers and T series spiral bevel gear steering boxes. The speed ration is about more than twenty thousand. We offer all kinds of products applied for leather making, wood making, textile, mine, food package, printing and environmental protection and other industries.