1. Quartz Sands(Silica Sands) High purity grade: SiO2:99.95%min-99.8%min Fe2O3:3ppm max-30ppm max, size:2-200 mesh high purity silica sand, quartz stone Deliberated grade: SiO2:99.8%min-99.0%min Fe2O3:50ppm max-0.03% max, size:2-325 mesh 2. Natural Crystal Powder SiO2:99.90%min-99.99%min, size:2-300 mesh 3. Fused Quartz Ingot SiO2:99.9%min Fe2O3:50ppm max, Al2O3:0.03% max, size:5-100 mesh 4. Quartz In Lump Special grade: SiO2:99.9%min, 1st grade: SiO2:99.8%min Fe2O3:50ppmmax 2nd grade: SiO2:99.7%min Fe2O3:100ppmmax 3rd grade: SiO2:99.5%min Fe2O3:200ppmmax 5. Micro-silica Powder SiO2:99.5%min-99.0% min, Fe2O3:0.02%max, Al2O3:0.3% max, size:200-800 mesh 6. Fused Quartz Powder SiO2:99.9%max, Fe2O3:50ppm max, size:2-325 mesh
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