ningbo wtoo industrial co.,ltd. is a integrated corporation.it was established on march 2000, with ningbo wtoo import&export co.,ltd, ningbo da'er bearing co.,ltd and ningbo ningwei bearing co.,ltd as it's subco-mpanies. we are dedicated ourselves to high-precision mini-sized deep groove ball bearings and automotive bearings.the registerd brand "wtoo" has become the well-known brand of china.our products are widely used in the high speed electric motors in automobiles,vacuum cleaners,air conditioners and massagers etc.especially the 608 bearing for motor of vacuum cleaner,its rotate speed exceeds