Riken Corporation manufactures and sells automotive and machinery parts in Japan and internationally. It offers piston rings; engine parts, such as camshafts, pistons, valve lifters, valve seats and lifters, valve spring retainers, tappets and rocker arms, crankshafts, and others; transmission parts, including seal rings, differential cases, pinion shafts, and others; drive and chassis parts comprising steering knuckles, damper forks, brake calipers, pressure plates, lower arms, and others; and vanes for air compressors and power steering systems, shoes and shoe discs for air conditioning systems, sliders for power steering systems, and others. The company also produces marine and industrial components and parts consisting of a range of parts for engines of various types, sizes, and applications, including aircraft, agricultural machinery, construction equipment, and industrial components, as well as large size piston rings for marine engine applications; other components for use in construction equipment and agricultural machinery; and compressor parts comprising vanes, housings, and cylinders. In addition, it provides piping products; aerospace industrial equipment parts; thermal engineering products consisting of furnaces, such as hydrogen gas heating furnaces, magnetic field heat treatment furnaces, vacuum furnaces, continuous ceramic sintering furnaces, general-purpose heat treatment furnaces, and others; and electromagnetic compatibility products, such as anechoic chambers and shield rooms. Riken Corporation was founded in 1927 and is headquartered in Tokyo, Japan.