Appel  flashing    grinding  Coarse   lapping  Ultra          Ultra

-lation   ball plate ball     grinding   ball    -precision     -precision

                     plates   plates     plates   grinding        grinding

                                                  plates          plates

            (G)      (M)       (Y1)       (Y2)    (Y3)            (Y4)  

Hardness  HRC55-65  HRC54-65 HB190-240 HB180-200  HB140-180  HB120-160

Remarks

1.Size and hardness can be customized according to customer requirements

2.Y4 for the German technology to produce the board