... purity 4.Surface chemical 5.hydrophobic Yushuntong fumed silica Yushuntong fumed silica has size small, super specific surface area, ... , thickening sex, thixotropy, electrical insulation, etc. Yushuntong fumed silica is mainly used for Silicone Rubber ,Adhesives, Sealants,Coatings, ... particle characteristics. For more information about any of our series, or to place your requirement, please feel free ...