40 Surface treatment coating, in particular application of surface coatings to machines and devices; grinding and polishing of stone, optical glass, optical lenses, common metals, precious metals, gems, gemstones; Blast treatment of a surface, namely, sand blasting; Surface coating of metal objects; Treatment of materials, in particular molding of plastic materials and metal treating, including zinc or aluminum treatment; Metal foundry services, namely, forging of metal goods to the order and specification of others, metal casting, metal fabrication and finishing services for others, metal tempering and metal treatment and plastic injection molding services for others ; Customized manufacture of semi-finished and finished parts of all kinds of metal, plastic and/or by means of contract zinc die casting and plastic injection molding, for others; Coating of metals, metal surfaces, wire and ceramics, in particular passivation, zinc-iron coating, tin plating, chromating, gilding, silver plating, nickel plating and powder coating services