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        CYSD adopt cold rolling technology after forging process, so as to effectively improve the service life; adopt salt bath heat treatment for the material; adopt CNC lathe machining ; adopt high precision double end grinding machine and high precision plane grinding machine ; adopt high precision centerless grinder and high-precision machining and superfine grinding machine for the outer rings, and the geometry precision of machining process of precision products & grinding process are managed and controlled in accordance with the national P2 grade while the normal quality bearings according to the national P5 grade.





         
         

         
         
         
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