... in 1921, is a function of product R & D-integrated manufacturing company in JP. KOYO bearings (Koyo Seiko Co., Ltd.) ... in 1921, is a function of product R & D-integrated manufacturing company in Japan, with 6557 employees. Japan's Koyo Seiko ... quality products bearing KOYO, providing the aerospace science and technology, computer components, motors, high-speed trains, rapid transit trains, industrial ...