Dear sir/madam, My Em is sales5 AT hf-bearings com . Please contact me for detail. Cixi Ruichang Machinery Industry CO.,LTD is a professional manufacturer and exporter of deep groove ball, automotive wheel, single row taper roller, miniature and small bearings from 1992. As a manufacturer, our products are of excellent and steady quality with the acquisition of the certificate of ISO9002.Our products are made of Gcr15(AISI52100). They are low noise and stable running. Acting on the principle of "Reliable Quality, Reasonable Price, Timely Delivery", we believe that our product wiil be competitive in the market.