Silicon; silica fume used as an additive for general industrial use especially in the field of construction; strontium; silica-based goods as cement substitutes and additives to enhance the properties of fresh or hardened concrete; carbon black for industrial purposes; inoculants, namely ferrosilicon-based foundry alloys for general industrial use especially in the field of construction

[ Treatment of materials and ferroalloys for general industrial use especially in the field of construction, namely, the addition of additives to molten metals; Metallurgical processing of melted iron; metal tempering; processing and treatment of bauxite, alumina, aluminum and silicon oxide; grinding and polishing of bauxite, alumina, aluminum and silicon oxide for the packaging, automobile, aviation, marine, building, machinery, sheet-metal, electronics, household appurtenance, decorative, s...

Treatment of materials and ferroalloys for general industrial use especially in the field of construction, namely, the addition of additives to molten metals; Metallurgical processing of melted iron; metal tempering; processing and treatment of bauxite, alumina, aluminum and silicon oxide; grinding and polishing of bauxite, alumina, aluminum and silicon oxide for the packaging, automobile, aviation, marine, building, machinery, sheet-metal, electronics, household appurtenance, decorative, spo...