Nittan Valve Co., Ltd. engages in the manufacture and sale of engine valves, automobile parts, spinning machine parts. It operates through the following segments: Small Engine Valve, Marine, Gear and Printed Wiring Board (PWB), and Other. The Small Engine Valve segment offers engine valves for engines for automobiles, two wheels, trucks, and buses. It also manufactures and sells generators, tillers, and mowers. The Marine Business segment manufactures engine valves for marine products in Japan and South Korea. The Gear and PWB segment sells precision forged gears and parts for automatic transmission in Japan for automobiles, trucks, agriculture, and construction. The Other segment provides valve lifters and roller rocker arms in South Korea and China. It also produces and sells chemical free vegetables. The company was founded by Shinji Shibayanagi in 1924 and is headquartered in Hadano, Japan.