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 sp...