The products are widely used in electronic packaging materials, resins, composite materials, plastics, coatings, pigments, ceramics, sealants, adhesives, glass and steel products, drug carriers, cosmetics, and antibacterial materials. For example, fumed silica is one of the most important nanoscale inorganic raw materials with strong surface adsorption, high surface energy, high chemical purity, good dispersion, thermal resistance and electrical resistance, etc. With its superior stability, reinforcement, thickening and thixotropy, it is unique in many disciplines and fields and has an irreplaceable role.