Crystal Silicon Powder . SiO2Fe2O3Size≥99.5-99.9% ≤0.008-0.03%300 mesh, 400 mesh, 500 mesh, 600 mesh, 800 mesh, 1000 mesh, 1250 mesh.Main use: It is used as insulation of normal high voltage electricity and in other industries such as epoxy resin plastic package, refractory materials, chemical industry, silicon and rubber. Crystal Silicon Powder