37 Installation, maintenance and repair of printing machines, offset rotary printing machines, flexographic printing machines, lacquering machines, packaging machines, coating machines, digital printing and marking machines, of machines for the graphics industry, and of machines for the further processing of printed matter or paper or plastics or metal or organic or inorganic materials and parts therefor; installation, maintenance and repair of lacquering machines, packaging machines, coating machines, pallet changing and pallet transfer machines, stacking machines, machines for handling sheets and plates of metal, screen printing machines, pad printing machines, flexographic printing machines, gravure printing machines, printing machines for use on sheets and plates of metal, printing machines for corrugated cardboard, marking machines, hot stamping apparatus, thermal transfer apparatus, photo printing machines, labelling machines, engraving machines, inkjet printing apparatus, laser marking apparatus and laser printing apparatus; installation, maintenance and repair of machines for producing product security means, identification features, security features, security labels, securities, banknotes and/or components therefor; installation, maintenance and repair of machines for applying product security means, identification features, security features, security labels and/or components therefor; installation, maintenance and repair of machines for producing product security means, identification features, security features, security labels, securities, banknotes and/or components therefor; installation, maintenance and repair of electric and electronic measuring and testing apparatus and instruments for adjustment and pre-adjustment, for subassemblies and parts for lacquering machines, packaging machines, coating machines, pallet changing and pallet transfer machines, stacking machines, machines for handling sheets and plates of metal, screen printing machines, pad printing machines, flexographic printing machines, gravure printing machines, printing machines for use on sheets and plates of metal, printing machines for corrugated cardboard, marking machines, hot stamping apparatus, thermal transfer apparatus, photo printing machines, labelling machines, engraving machines, inkjet printing apparatus, laser marking apparatus and laser printing apparatus; installation, maintenance and repair of electric and electronic measuring and testing apparatus and instruments for adjustment and pre-adjustment, for subassemblies and parts for machines for producing product security means, identification features, security features, security labels, securities, banknotes and/or components therefor; installation, maintenance and repair of electric and electronic measuring and testing apparatus and instruments for adjustment and pre-adjustment, for subassemblies and parts for machines for applying product security means, identification features, security features, security labels and/or components therefor; installation, maintenance and repair of electric and electronic measuring and testing apparatus and instruments for adjustment and pre-adjustment, for subassemblies and parts for machines for packaging product security means, identification features, security features, security labels, securities, banknotes and/or components therefor; installation, maintenance and repair of electric and electronic measuring and testing apparatus and instruments for adjustment and pre-adjustment, for subassemblies and parts of and/or for product security means, identification features, security features, security labels, securities, banknotes and/or components therefor; machinery installation, maintenance and repair; cleaning of buildings; vehicle cleaning