... with 23 years' experince in abrasive field. Our advantage1. High purity, less impurities, good hardness, longer life;2. Large melting ... furnace, longer melting time, lead to more crystallization, bigger crystals;3. Chemical washed and ... water washed, good cleanness;4. Special treated products, lead to the higher purity, better toughness, and better usage effect. Chemical ...