Yuken Kogyo Co., Ltd. engages in the manufacture and sale of hydraulic components and industrial machineries. It operates through the following business divisions: Hydraulic Equipment Business, Hydraulic System Business and Environmental Machinery Business. The Hydraulic Equipment Business division produces and sells hydraulic pumps, hydraulic motors, proportional electro-hydraulic controls, pressure control valves, flow control valves, directional control valves modular valves, logic valves, linear servo valves and AC servo motor driven pumps. The Hydraulic System Business division produces and sells various hydraulic systems for industrial machine, marine use, special hydraulic power units and various standard power packs. The Environmental Machinery Business division provides PET bottle compacting press, automatic chip compactor KIRIKO and various garbage compactors/separators. The company was founded by Uichi Yuki in June 1929 and is headquartered in Ayase, Japan.