cubic boron nitride 1.Purity:99% 2.Size:1-1000micro 3.Packing:500g/plastic bag 4.MOQ:500g cubic boron nitride1.Purity:99%-99.5%2.Size:1-1000micro3.Packing:500g/plastic bag,and then into a carton4.MOQ:500g.5.Usage:abrasive,finishing,grinding,polishing metal,ceramic workpieces