Chemicals used in industry, namely, silicium acids, aluminium oxide, titanium dioxide, kieselgur, zirconium oxide, silicates in the nature of silicic acids, silica, silicone fluid, silicone resins, silicon, catalysts, namely, catalysts for chemical and biochemical processes and catalysts for use in the manufacture of industrial chemicals; chemicals for use in industry, namely, finely divided silica for use in the chemical, pharmaceutical, paper, cosmetic, paint, ceramic and plastic industries...