... property,uniform particle size distribution,better mobility,coefficient and good electromagnetic radiation. ApplicationSilica Quartz is widely used in aerospace,electronic epoxy encapsulation ... ,high-grade electronic,ceramica,special refractoy materials,shelding and burnish polishing materials. Specification Quartz GradeSiO2Al2O3Fe2O3MgoCaORemarkNO.1990.50.050.10.1Used in special ...