Refined quartz sand SiO2Fe2O3Size≥99.5-99.9%≤0.01-0.05%2-200 mesh (10-0.0075mm). It can be produced as request. Appearance: White crystal Main use: It is used in quartz melting, exact foundry, grinding wheel, high-grade glass and refractory materials. It is exported to Japan, South Korea and Singapore.