37 Repair and maintenance of industrial and infra-structural installations and buildings; installation of components in industrial, infra-structural and buildings environments; planning and maintenance of roads and waterways; installation of bus shelters; installation of traffic information, namely, information signs, mobile lane signaling, motorway signaling, shipping lane signs, sign posts, and mobile traffic signaling equipment; installation of platform shelters; installation of advertising columns; installation of telephone booths; installation of antennas, fiber optic networks, mobile communication networks, central antenna systems, telecommunication base stations; installation of cables; installation of electric information signs and luminous information signs; installation of traffic control systems and structures for these, namely, information signs, mobile lane signaling, motorway signaling, shipping lane signs, sign posts, and mobile traffic signaling equipment; installation of platform lighting; planning and installation of railroads and the infrastructure thereof; tunnel building; bridge building; planning and installation of air fields and take-off and landing strips; adaptation, maintenance, assembly and repair of airplanes and airplane components; adaptation, maintenance and repair of ships; adaptation, maintenance and repair of buses, trams, trucks, trailers and other vehicles and prototypes thereof; installation of lightning security systems, namely, of lightning rods and other lightning security materials; installation of gas pipes and water pipes and high pressure pipes; installation of electricity plants; installation of solar energy systems; construction and setting up of sluices and dams; installation of air conditioners; installation of cooling, refrigerating and ventilation installations for airport facilities, airport terminals, the chemical industry, defense applications, the food industry, industrial applications, marine applications, mobile hospitals, the petrochemical industry, the poultry processing industry, telecommunications stations; installation of security systems; installation of fire safety systems; installation of sprinkler systems; installation of chemical, petrochemical and pharmaceutical factories; installing ventilation fans and ventilation ducts; installation of electric power stations; installation of burglar alarm systems; installation of cables for telephone and telecommunication; concrete repair; maintenance of gas and oil pipes; adaptation of cranes and hoisting equipment; maintenance, renovation, revision and repair of base metals and their alloys, unprocessed and semi-processed metals and their alloys, metallic foil, non-electrical metal cables and wires, metal tubes and pipes, ballistic metal panels, metal panels, metal tubes, metal chains for fixed and moving metal construction bridges, metal containers and tanks for industry, metal valves and stop gates, metal plates, pressure molding, templates, coupling sleeves and troughs for screen printing, metal storage units, metal direction signs, and parts therefor, machine components in the nature of metal valves, hydraulic and mechanical driving mechanisms not for vehicles, pneumatic driving mechanisms not for vehicles, machines for processing potatoes, machines to cut and bevel off metal parts, rolling machines, civil engineering machines in the nature of machines for the production of cellular concrete, construction material and stone-like material, printing presses, printing plates, printing machine templates, compressors, pneumatic blowers, engraving machines, vacuuming machines, machines for shipbuilding, pressure belt machines, machines to print textile, drilling machines, drill bits, drill chucks, machine components in the nature of moulds and stamps, packaging machines, robots, extrusion and co-extrusion machines, draw-benches, die-casting moulds, machines for the production of building materials, rotation silkscreen presses, fixative equipment for the press, machines to apply a coating to textile, woven items, knitted items, foil, paper and non-wovens, rolling machines, centrifuges, chains for hoists, compressed air machines, compressors, condensers, pump/compressors for oil or gas, welding machines, machines for blowing synthetic bottles, filter machines, filter presses, machine or engine components in the nature of filters, machine or engine component filters, slaughtering machines, slaughtering machines for white and red meat, grinding machines, rolled and cast metal machine components, drive chains being machine components, generators, machines to process thermoplastic and thermo-setting synthetics into semi-manufactured and end products, moulds for the synthetics and metal industry, montage and maintenance machines, die-casting machines, punching machines, sealing machines, gear boxes and gear reducing boxes, clutches, machines to process meat and meat products and fish and fish products, machines to process and treat foods, machines to process potatoes, turbines not for vehicles, labeling machines, machines for treating textile, equipment and instruments for bio-technological processes, industrial machines for the treatment of hydrocarbon, oil and gas, and other chemical products, printing plates, and replacement parts therefor, engraving equipment to be used manually and replacement parts therefor, electronic navigational equipment, photographic cameras, cinematographic cameras, fiber optic cables; scales, signal processors, dosimeters, optical scanners, bar code readers, bar code printers, bar code verification equipment, housing for electronics of defense systems, housing for telecommunications equipment, housing for aviation equipment, electrical and electronic controllers for defense systems, electromagnetic shielding for electronic systems, remote controls for weapons, dosimeters and mixing machines for printing presses, printed circuits, cathode ray tubes, inkjet printers for textile and paper printing purposes, photocopiers, traffic control devices in the nature of information signs, mobile lane signaling, motorway signaling, shipping lane signs, sign posts, and mobile traffic signaling equipment, computers and computer peripherals, solar heating panels, air conditioners, cooling, refrigerating and ventilation installations for airport facilities, airport terminals, the chemical industry, defense applications, the food industry, industrial applications, marine applications, mobile hospitals, the petrochemical industry, the poultry processing industry, and telecommunication stations, water conduit equipment, water heaters, water purification units, industrial devices for water refining in the nature of machines for cleaning and refining polluted water, devices for liquefying gases in the nature of machines for cooling gases to liquids, industrial devices for drinking water production in the nature of machines for cleaning and refining polluted water so that it is suitable for drinking, climate control systems in the nature of controls for temperature and humidity level, water coolers, pre-cooling tunnels, freezer tunnels, autoclaves, incubators, disinfecting equipment, evaporating plants, drying racks, textile dryers for textile printing, filters for air conditioning units, air filters for industrial installations, drying equipment for the press, and parts for the aforesaid goods, road covering material in the nature of asphalt and concrete, non-metal containers and reservoirs for commercial use, textile press cloths for the printing press; rental of construction equipment and industrial machines; soundproofing services; custom construction of industrial and infra structural installations and buildings; custom construction of roads and waterways; custom construction of industrial plants for fuel production; custom construction of nuclear power plants; building inspection; providing advice regarding repair of construction damages and prevention of construction damages