KOYO LTD was founded in1921,it is a Japan company which is devote to research and manufactcure,it possesses 8 plants in Japan and 9 plants overseas, has 6557 stuffs and is one of Japan four bearing manufacture.KOYO is a enterprise which has a long history and culture in Japan, ranking third in the world of integrated Products bearing manufacturer, the production of bearings are widely used in a variety of general machinery and other industries and fields around the world