... in tyre, medicine-making,gel-rubber shoe-making,paint. Hydrophilic fumed silica white and colloidal micro-particle with its primary micro ... -particle from 5-40 nmHydrophilic fumed silica .Characteristic: It is a white and colloidal micro- ... : It is used widely in silicon rubber, construction sealant, coating, electron and electric, aerospace, medicine and medical material, resin ...