Okamoto Machine Tool Works, Ltd. manufactures and sells grinding machines and semiconductor related equipment in Japan and internationally. It offers conventional type precision, CNC precision, double column type, and rotary surface grinding machines; precision and ultra precision form grinding machines; precision cylindrical, internal, universal, and center hole grinding machines; gear and specialized grinding machines; and consumer and special designed devices. It also provides semiconductor equipment devices, including wafer backside grinding machines, polishing machines, lapping machines, slicing machines, and ingot processing machines. In addition, the company provides various materials. Okamoto Machine Tool Works, Ltd. was founded in 1926 and is headquartered in Annaka, Japan.