CNC high precise alloy sleeve processing .We equipped with over50 pieces of CNC machinery among which 20 pieces were introducedfrom Japan (BNC-34C2 : processing diameter :3-34cm,)ten pieces ofmachinery were introduced from Tai Wan(processing diameter :3-30,20pieces of domestic machinery CK6130’s processing diameter is30-25cm. 5 pieces of milling machinery.3 pieces of drillingmachine,1 pieces of centerless grinder.2 pieces of plat-stonemilling machine.