... steel, mold, glass, optical glass, stone, concrete, asphalt, ceramics, magnate, and other deep manufacturing industries.Diamond ... Co, Ltd, specializes in manufacturing Diamond Knife Sharpener, Diamond Mesh Sharpener, Electroplated Diamond Saw Blades, Bush Hammering Wheels , ... 17 years experience in the field of manufacturing diamond sharpening steel, and we always stick to the company philosophy ...