1.suitable for Epoxy Molding Compound,Ceramics, Refractory,etc. 2. low impurities, low price, 3. various sizes, Our Fused Silica Powder, also named Amorphism silica powder , are obtained by way of pulverizing Fused Silica Lump. Their properties are characterized by high purity, low in linear coefficient of thermal expansion, low inner stress, superior in moisture resistance , low Alfa-ray, very ...