Dongguan TR Bearing Factory was founded in 1979 and the next year started to develop, produce spherical outside surface ball bearing units and market abroad. TR was awarded as an advanced provincial level and national grade 2 enterprise in 1988 and in 1989 respecitively; in 1989 TR was one of ten export bases of bearing products at the meantime was authorized to export and import through its own channel. in 1933 it becomes one of the top 500 machinery manufacturers in China, TR also won the following titles: In 1996 Hi-tech enterprise; in 1997 ISO9001 quality manage system certificate of conformity; in 1999 famous-brand prize of Guangdong; in 2004 "abide by contract; value credit" qualified by National Industrial and Commercial Administration.