37 Installation, repair, maintenance and cleaning of metal materials for building and construction, and providing information relating thereto; installation, repair, maintenance and cleaning of ventilation hoods of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of metal hoods of ventilation hoods, and providing information relating thereto; installation, repair and maintenance of prefabricated building assembly kits of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of set of metal parts for assembling a smoking booth, and providing information relating thereto; installation, repair, maintenance and cleaning of metal junctions for pipes, and providing information relating thereto; installation, repair, maintenance and cleaning of metal joints for pipes, and providing information relating thereto; installation, repair, maintenance and cleaning of road signs of metal, non-luminous and non-mechanical, and providing information relating thereto; mounting, repair, maintenance and cleaning of small items of metal hardware, and providing information relating thereto; repair and maintenance of wire nets and gauzes, and providing information relating thereto; installation, repair, maintenance and cleaning of metal nameplates and door nameplates, and providing information relating thereto; installation, repair, maintenance and cleaning of letter boxes of metal, and providing information relating thereto; mounting, repair, maintenance and cleaning of joinery fittings of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of signboards of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of greenhouses of metal, transportable, and providing information relating thereto; installation, repair, maintenance and cleaning of metal tombs and metal tomb plaques, and providing information relating thereto; repair, maintenance of sculptures of common metal, and providing information relating thereto; installation, repair, maintenance and cleaning of dishwashers for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of dish washing and drying apparatus for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of dishwashers for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of dish washing and drying apparatus for industrial purposes, and providing information relating thereto; repair, maintenance and cleaning of rice polishing machines, and providing information relating thereto; installation, repair, maintenance and cleaning of lifts, other than ski-lifts, and providing information relating thereto; repair and maintenance of electrostatic precipitators, and providing information relating thereto; repair and maintenance of electric dust collectors, and providing information relating thereto; installation, repair, maintenance and cleaning of garbage disposal units, and providing information relating thereto; installation, repair, maintenance and cleaning of blowing machines, and providing information relating thereto; installation, repair and maintenance of processing machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of converting machineries * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of cutting machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of pressing machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of perforating machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of polishing machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of grinding machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of bending machines * for metalworking * [ of metal, ] and providing information relating thereto; installation, repair and maintenance of metalworking machines and tools, and providing information relating thereto; installation, repair and maintenance of metalworking machines and tools, of metal, and providing information relating thereto; installation, repair and maintenance of painting machines and apparatus, and providing information relating thereto; installation, repair and maintenance of fire alarms, and providing information relating thereto; installation, repair and maintenance of gas leak alarms, and providing information relating thereto; installation, repair and maintenance of burglar alarms, and providing information relating thereto; installation, repair and maintenance of measuring or testing machines and instruments, and providing information relating thereto; installation, repair and maintenance of power distribution or control machines and apparatus, and providing information relating thereto; installation, repair and maintenance of rotary converters, and providing information relating thereto; installation, repair and maintenance of phase modifiers, and providing information relating thereto; installation, repair and maintenance of solar batteries, and providing information relating thereto; installation, repair and maintenance of electrical cells and batteries, and providing information relating thereto; installation, repair and maintenance of telecommunication machines and apparatus, and providing information relating thereto; installation, repair and maintenance of home automation * remote * control devices, and providing information relating thereto; installation, repair and maintenance of automatic control apparatus and remote-monitoring apparatus for measure, monitor and control of air conditioning, and providing information relating thereto; repair and maintenance of personal digital assistants in the shape of a watch, and providing information relating thereto; repair and maintenance of smartphones, and providing information relating thereto; repair and maintenance of electronic machines, apparatus and their parts, and providing information relating thereto; installation, repair, maintenance and cleaning of electric lamps and other lighting apparatus, and providing information relating thereto; installation, repair, maintenance and cleaning of lighting apparatus with ventilating function, and providing information relating thereto; installation, repair and maintenance of lighting apparatus with air purifying function, and providing information relating thereto; installation, repair, maintenance and cleaning of consumer electric appliances, and providing information relating thereto; installation, repair, maintenance and cleaning of disinfecting tableware cabinets for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of disinfecting tableware apparatus for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of disinfecting tableware cabinets for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of disinfecting tableware apparatus for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of air purifiers for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of electric odor removing apparatus for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of air conditioners for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of industrial air purifiers, and providing information relating thereto; installation, repair, maintenance and cleaning of electric odor removing apparatus for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of dish drying machines for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of industrial dish drying machines, and providing information relating thereto; installation, repair, maintenance and cleaning of non-electric cooking heaters, and providing information relating thereto; installation, repair, maintenance and cleaning of heaters, and providing information relating thereto; installation, repair, maintenance and cleaning of cooking heaters, and providing information relating thereto; installation, repair, maintenance and cleaning of kitchen worktops with integrated sinks, and providing information relating thereto; installation, repair, maintenance and cleaning of kitchen cooking tops with integrated sinks, and providing information relating thereto; installation, repair, maintenance and cleaning of kitchen sink tops being wash basins and surrounds, and providing information relating thereto; installation, repair, maintenance and cleaning of kitchen sink units other than furniture, and providing information relating thereto; installation, repair, maintenance and cleaning of kitchen sinks, and providing information relating thereto; installation, repair, maintenance and cleaning of cooking apparatus and installations for commercial use, and providing information relating thereto; installation, repair, maintenance and cleaning of electric cooking ovens, and providing information relating thereto; installation, repair, maintenance and cleaning of electric cooking stoves, and providing information relating thereto; installation, repair, maintenance and cleaning of electric cook tops, and providing information relating thereto; installation, repair, maintenance and cleaning of gas cooking ovens, and providing information relating thereto; installation, repair, maintenance and cleaning of gas cooking stoves, and providing information relating thereto; installation, repair, maintenance and cleaning of cook tops, and providing information relating thereto; installation, repair, maintenance and cleaning of electromagnetic induction cookers, and providing information relating thereto; installation, repair, maintenance and cleaning of steam ovens, and providing information relating thereto; installation, repair, maintenance and cleaning of electric hobs, and providing information relating thereto; installation, repair, maintenance and cleaning of gas hobs, and providing information relating thereto; installation, repair, maintenance and cleaning of induction hobs, and providing information relating thereto; installation, repair, maintenance and cleaning of ventilation apparatus, and providing information relating thereto; installation, repair, maintenance and cleaning of range hoods for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of cooker hoods for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of range hoods for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of cooker hoods for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of air-conditioning fans for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of ventilating fans for household purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of air- conditioning fans for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of ventilating fans for industrial purposes, and providing information relating thereto; installation, repair, maintenance and cleaning of industrial exhausting apparatus for removing grease * for kitchen use, * and providing information relating thereto; repair, maintenance and cleaning of filters for range hoods for household purposes, and providing information relating thereto; repair, maintenance and cleaning of filters for ventilating fans for household purposes, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for range hoods for household purposes, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for ventilating fans for household purposes, and providing information relating thereto; repair, maintenance and cleaning of filters for range hoods for industrial purpose, and providing information relating thereto; repair, maintenance and cleaning of filters for ventilating fans for industrial purpose, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for range hoods for industrial purpose, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for ventilating fans for industrial purpose, and providing information relating thereto; repair, maintenance and cleaning of filters for air purifiers for household purposes, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for air purifiers for household purposes, and providing information relating thereto; repair, maintenance and cleaning of filters for air purifiers for industrial purposes, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for air purifiers for industrial purposes, and providing information relating thereto; repair, maintenance and cleaning of filters for lighting apparatus with ventilating function, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for lighting apparatus with ventilating function, and providing information relating thereto; repair, maintenance and cleaning of filters for lighting apparatus with air purifying function, and providing information relating thereto; repair, maintenance and cleaning of parts and accessories for lighting apparatus with air purifying function, and providing information relating thereto; installation, repair, maintenance and cleaning of electrical home appliances, and providing information relating thereto; installation, repair, maintenance and cleaning of water purifiers for household purposes, and providing information relating thereto; repair, maintenance and cleaning of water filtering installations, and providing information relating thereto; installation, repair, maintenance and cleaning of deodorizing devices for pets *, electric * and providing information relating thereto; installation, repair, maintenance and cleaning of prefabricated building assembly kits, not of metal, and providing information relating thereto; repair, maintenance of building glass, and providing information relating thereto; installation, repair, maintenance and cleaning of road signs, non-luminous and non-mechanical, not of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of joinery fittings, not of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of greenhouses, transportable, not of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of gravestones and tomb plaques, not of metal, and providing information relating thereto; installation, repair, maintenance and cleaning of furniture, and providing information relating thereto; installation, repair, maintenance and cleaning of benches, and providing information relating thereto; repair and maintenance of fans for personal use, non-electric, and providing information relating thereto; repair and maintenance of hand fans, and providing information relating thereto; installation, repair, maintenance and cleaning of letter boxes, not of metal or masonry, and providing information relating thereto; installation, repair, maintenance and cleaning of signboards of plastic, and providing information relating thereto; installation, repair, maintenance and cleaning of receiver-side storage boxes for home delivery services, and providing information relating thereto; installation, repair, maintenance and cleaning of intelligent parcel delivery lockers, and providing information relating thereto; repair, maintenance and cleaning of cleaning tools and washing utensils, and providing information relating thereto; repair, maintenance and cleaning of panels for preventing dirt, used in standing state around gas cooking ranges, electromagnetic induction cookers and other heaters, and providing information relating thereto; repair, maintenance and cleaning of covers for preventing dirt of gas cooking ranges, electromagnetic induction cookers and other heaters, and providing information relating thereto; repair, maintenance and cleaning of kitchen utensils and containers, not including gas water heaters for household use, non- electric cooking heaters for household purposes, kitchen worktops and kitchen sinks, and providing information relating thereto; repair, maintenance and cleaning of cooking utensils, non-electric, and providing information relating thereto; repair and maintenance of un-worked or semi-worked glass not for building, and providing information relating thereto; construction; plumbing; machinery installation; construction consultancy; construction information; construction services of subcontractors; provision of construction information; consultancy relating to building construction; installation, repair, maintenance and cleaning of hobs, and providing information relating thereto; cleaning of air-conditioning systems and providing information relating thereto; cleaning of building exterior surfaces and providing information relating thereto; cleaning of building interiors and providing information relating thereto; interior house cleaning and providing information relating thereto; cleaning of windows and providing information relating thereto; cleaning of commercial kitchens and providing information relating thereto; cleaning of kitchens and providing information relating thereto; repair and maintenance of building equipment; installation of computer network operating and controlling hardware for air-conditioning systems, heating systems and plumbing system for buildings; rental of cleaning apparatus; rental of cleaning equipment; rental of cleaning machines; rental of metal materials for building and construction; rental of small items of metal hardware for buildings; rental of joinery fittings of metal; rental of dishwashers for household purposes; rental of dish washing and drying apparatus for household purposes; rental of dishwashers for industrial purposes; rental of dish washing and drying apparatus for industrial purposes; rental of industrial brushes, brushes for buckets and brushes for pipes; rental of electric washing machines; rental of dish drying machines for household purposes; rental of industrial dish drying machines; rental of dust removing installation for air cleaning purposes