Yuan Yi Chang (YYC) Machinery Co., Ltd. is located in Taichung, Taiwan since 1980; built up from precision racks. Currently, YYC is the top one brand in local market share, with 35-years- experience in machinery industry. In 2013, YYC expanded facilities and production basement; officially collaborated all the power transmission equipment product series including: Gear Rack, Pinion, Planetary Reducer and backlash Free Reducer.