1. coarse particle size for coarse grinding, the damaged surface "leveling", generally this process to have a certain amount of removal, construction, pay attention to flatness.

2. fine grinding process, this process to remove less, the selection of finer particle size of the mill, through 4-5 particle size of the sequential grinding, to meet the requirements of polishing.

3. polishing process, to achieve the requirements of smooth surface.

4. When grinding the seal, it is inevitable to encounter high hardness debris such as sand ding that is difficult to grind with water sandpaper. You can grind it with a stone mill. It can also make dull super hard alloy steel seal cutting knife sharp again.

5. Although the one-time investment is large, it can be used repeatedly, and its high durability makes it comparable to countless pieces of water sandpaper, and the cost performance is very high.

6. it is very convenient to use, dry grinding and water grinding can be used, rinsed after proper, cool dry. It has the characteristics of high hardness, wear resistance and high sharpness. Factory price direct shipment, quality assurance, complete specifications