1.Best quality and reasonable price 2. ISO9001 :2008 1.abrasive tools should be written according to the order, shape, size, abrasive material, grain, grade,and speed2.Suitable for the work pieces made of materials Chilled steel3.High-speed steel, High-carbon steel, which of strong intensity, high hardness grinding4. thread work piece components Micro finishing, and other high Smooth finish ...