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Construction of greenhouses; Constructing [erecting and glazing] conservatories; Construction of conservatories and greenhouses; Installation of glass in conservatories, windows, doors and greenhouses; Installation of insulating glass in conservatories, windows, doors and greenhouses; Extermination, disinfection and pest control; Building, construction and demolition; Glazing, installation, maintenance and repair of glass, windows and blinds; HVAC (Heating, ventilation and air conditioning) installation, maintenance and repair; Computer hardware and telecommunication apparatus installation, maintenance and repair; Plumbing installation, maintenance and repair; Insulation of pipes; Advice relating to preventing blockages in plumbing lines; Advice relating to preventing blockages in grease traps; Installation of pipe insulation; Information on the maintenance of measuring and test equipment; Installation of energy-saving apparatus; Installation of power generating apparatus; Installation of refrigerating apparatus; Installation of water supply apparatus; Installation of water softeners; Installation of rainwater tanks; Installation of building automation equipment; Installation of rainwater harvesting systems; Installation of rainwater drainage systems; Installation of solar powered systems; Installation of electric light and power systems; Installation of environmental engineering systems; Installation of instrumentation systems; Installation of rainwater collection systems; Installation of environmental protection systems; Installation of plumbing systems; Installation of sun roofs; Installation of water pipes; Installation of sewer liners; Machinery installation, maintenance and repair; Installation and maintenance of irrigation systems; Installation and maintenance of solar thermal installations; Irrigation devices installation and repair; Civil engineering relating to agricultural land; Building construction supervision; Civil engineering construction; Civil engineering [construction] consultancy; Civil engineering relating to rural land; Construction supervision of civil engineering projects; On-site construction supervision of civil engineering works; Civil engineering relating to water irrigation