Yuken Kogyo Co., Ltd. engages in the manufacture and sale of hydraulic components and industrial machineries. It operates through the following segments: Hydraulic Products Business, System Products Business, and Environmental Machinery Business. The Hydraulic Products Business segment 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 System Products Business segment produces and sells various hydraulic systems for industrial machine, marine use, special hydraulic power units, and standard power packs. The Environmental Machinery Business segment provides PET bottle compacting press, automatic chip compactor KIRIKO, and garbage compactors or separators. The company was founded by Uichi Yuki in June 1929 and is headquartered in Ayase, Japan.