5-3mm Lump Fused Silica Sand for Refraction

5-3mm Lump Fused Silica Sand for Refraction. High Purity SiO2: SiO2 content exceeds 99.95% with minimal impurities like Al2O3 and Fe2O3. Near Zero Thermal Expansion: Coefficient of thermal expansion is 0.1, ensuring extreme thermal stability. ISO Certified Quality: Product meets ISO certification standards for industrial applications. Customizable Attributes: Color, density, hardness, and thermal expansion coefficient are customizable. Versatile Applications: Suitable for rubber, chemical, construction, ceramic, and glass industries. Multiple Form Factors: Available in block, granular, and powder forms with various mesh sizes. OEM/ODM Support: Company offers both OEM and ODM services for tailored production.