40 Advice and information services in the field of treatment of materials in the nature of metal, stone, cork, plastic, wood, leather, textiles, glass and transparent materials, painted or coated, cutting of metal, plastic, wood, stone, cork, textiles, leather, glass and transparent materials, painted or coated, polishing of metal, plastic, stone, cork, textiles, wood, leather, glass and transparent materials, painted or coated, applying decorative and protective coatings to metal by means of galvanization, etching of metal, plastic, stone, cork, textiles wood, leather, glass and transparent materials, painted or coated; engraving services for marking goods, namely, marking of metals, plastics, stone, cork, textiles wood, leather, glass, and transparent materials, painted or coated; engraving and printing services, namely, reproduction of typographical characters by engraving and printing by mechanical, hot stamping or laser technologies