... 3.durable, 4.stronger flexibility than WA, 1.abrasive product cover various specifications of vitrified abrasives ... Please mark in detail(such as max speed, port, special bond and so on), when the function ... company would like to help with you to develop new-style abrasive tools, and to tackle a key ... problem7.Wheel should be written according to the order, shape, size, abrasive material, grain ...