4-10mesh Fused Silica Sand for Refractories Materials Sainuo Quartz

4-10mesh Fused Silica Sand for Refractories Materials Sainuo Quartz. High Purity SiO2: SiO2 content above 99.95% with low impurities like Al2O3 and Fe2O3. Near Zero Thermal Expansion: Extremely low thermal conductivity and excellent thermal stability. OEM/ODM Support: OEM and ODM services available with 1 R&D engineer. ISO Certified: Product meets ISO certification standards for quality assurance. Stable Chemical Properties: Chemically stable with pH value of 6 and high softening point. Circular Particle Shape: Special machinery production ensures large packing density. Fast Lead Time: Average lead time within 15 workdays for both peak and off seasons. Wide Application Range: Suitable for ceramics, refractories, and polysilicon crucibles.