1.the main steps to produce the ball: heading,polishing,heat treament,grinding,lapping,packing

2.the special and and fine producing-technique;the tiptop production equipment,like:super-fine dringding machine from Germany,resin super-fine grinding machine from Japan; the precision test equipment,like:automatic stee-ball shape tester,Single&Double-view metalloscope,Rockwell & Vickers hardness tester,stee-ball vibration measurer,roundness meter and etc;and an appropriate scale of operation            
               
3.the product is: possible hardness, technical characteristics,perfectly shiny, compact and defect-free surface,low noise

4.HRC: 62-66
5.Noise: 26-30db
6.VDWS: bellow 0.15um
7.VDWL: bellow 0.20um