Chemicals used in industry, with the exception of grain refinement additives for aluminium alloys; silica in finished form as mineral raw material, particularly for use as a filler for natural and synthetic rubber, for latex, for compounds of thermoplastic materials and of synthetic resins, for adhesives and for mastic compounds (included in this class); silica for use as a carrier material for chemical substances and colorants, as a quality-improving component for ceramic compounds and as a scorifying component for electrode coating

Silica as an abrasive component for cleaning preparations, for polishing compounds and for sharpening stones