35
Retail of electrotechnical apparatus and equipment; providing workers
37
Building, construction and maintenance of watercraft, boats, barges, tug boats, fishing boats, draggers, dry docks and dry dock facilities, shipyards, quays, partitions, dams, piers, bridges, offshore platforms (including platforms for the exploration for and production of oil), light towers and lighthouses, moorings, loading docks, power plants and industrial plants and factories; building and/or construction of pipelines, drainage systems, oil and gas production facilities, lighting units, roads, wells and shafts; repair of vessels; dragging and stabilisation of rivers, waterways and the like
40
Treatment of materials during the manufacture of steel and aluminium components of pipelines, oil and gas production facilities, drainage systems, instrumental systems and lighting systems; treatment of materials during the manufacture of autoclaves
42
Design, planning and consultancy for the building and construction of offshore platforms (for exploration for and the production of oil and gas), beacons and lighthouses, offshore platforms, moorings, loading docks, power plants, industrial plants and factories, pipelines, drainage systems, oil and gas production systems, lighting units, roads, wells and shafts; industrial automation