High Purity 99.50% Fused Silica Sand for Precision Casting

High Purity 99.50% Fused Silica Sand for Precision Casting. High Purity SiO2: SiO2 content up to 99.99% with ultra-low impurities for high-end applications. Customizable Purity: SiO2 purity adjustable from 99.9% to 99.99% based on specific customer needs. Wide Particle Range: Available in powder (100-3000 mesh), granule (0.1-50mm), and block forms. Custom Shapes: Customized shaped parts available based on customer drawings and samples. Stable Chemical Properties: Acid and alkali corrosion resistance with low dissolution and etching resistance. Near-Zero Thermal Expansion: Ensures dimensional stability and precise temperature control in critical processes. ISO9001 Certified: Manufactured under strict quality management with ISO9001, SGS, and BV certifications.