Our Ultrafine silica powder (SiO2) is made of super purified and high quality natural silica ore by applying special hi-tech methodology in the process of preliminary selecting, fragmenting, grinding, purifying, dehydrating and classifying. It enjoys unmatched fineness of granularity and well-proportioned. The dia of granule be able to reach high to 6000 Mesh. The specific feature of perfect chemical stability, high rigidity and good insulation capability makes this product become the best filling and additive materials in the industries which request high Fire-Retardancy, high insulation, high strength. It has comprehensive applications including dope, paint-coatings, adhesive, sealants, silica gels, rubber, electron, and epoxy resins and etc.