Chemical agents for the surface treatment of metals; Chemical preparations for facilitating the alloying of metals; Chemical preparations for forming coatings on metals; Chemical preparations for inhibiting corrosion; Chemical preparations for inhibiting rust; Chemical preparations for manufacturing finishing compositions; Chemical preparations for priming; Chemical preparations for use in foundries; Chemical preparations for use in the manufacture of surface coatings; Chemical preparations for use in the metallurgical industry; Coating agents (chemicals), other than paint; Coating compositions (chemicals), other than paint; Coatings for the finishing of surfaces (chemicals)(other than paints, oils or building materials)