chemical preparations for use in the metal finishing industry, namely, electro-cleaners, acid salts, buffing cleaners and alkaline strippers used in electroplating; metal surface phosphating preparations; chemical-typed paint strippers; aluminum surface cleaning, brightening, dexoiding/desmutting, anodizing, coloring and etching preparations; stainless steel cleaning, brightening and descaling preparations; copper, brass, and titanium cleaning, deoxiding and descaling preparations; acid and alkali-based vehicle surface preparation compounds; cleaners for metal, plastic and other industrial substrates; water treatment chemicals; oxidizing and reducing, reagents for metal surfaces; chemical products for maintenance of industrial equip[ment and facilities; acid metal descalers and derusters; fume suppressants