| Gas extraction – systems and equipment |
| Petroleum – heavy derivatives |
| Industrial consultants |
| metal lapping |
| Cocks and valves |
| High-pressure valves |
| Waste and refuse incineration – plants |
| Barges – construction |
| Alarms – security devices |
| anti-slip mats |
| Autoclaves for research institutes |
| Automation – systems and equipment |
| dredging |
| Dredging contractors |
| Industrial waste management |
| water treatment plant management |
| Fastening devices |
| internal grinding |
| external grinding |
| bioethanol |
| Bottom pressure vessels |
| Nuts and bolts, custom-made |
| Nuts and bolts |
| construction of industrial plants |
| construction of offshore oil drilling platforms |
| Fire protection equipment |
| Industrial piping |
| Pneumatic tubes – systems |
| Pipes and tubes |
| Tubes and pipes, rubber and plastic |
| Central heating systems |
| Chemistry, inorganic – raw materials and derivatives |
| Compensators |
| Compressors |
| design of special systems |
| Pipeline construction and installation |
| Construction Materials |
| Steel, structural |
| Monitoring and control equipment |
| Submersible pumps |
| Turning – steels and metals |
| gas pressure regulators |
| Electrical components and parts |
| Electricity – production and distribution |
| Electricity supply stations |
| electricity |
| electric pumps |
| electricity distribution |
| Groupage services |
| Extrusion systems |
| torches |
| precision mechanical engineering |
| Cookers |
| Gas – production and distribution |
| Gas and oil – exploitation |
| Gases, compressed and liquefied |
| Portable power tools |
| Machine tools – metal machining |
| Iron, special grade and pig iron |
| compressed gases wholesale |
| Port services |
| maritime services |
| high pressure pipes |
| High-pressure technology |
| high pressure fittings |
| Hydraulic equipment |
| Import-export – steels and metals |
| Import-export – vehicles and transport equipment |
| Import-export – gas |
| Inductive sensors |
| Industrial maintenance |
| Machine vision system |
| industrial constructions |
| industrial gas |
| Industrial pumps |
| Removals – industrial facilities |
| industrial vision |
| Engineering – industrial consultants |
| Stainless steels |
| systems and equipment for oil refineries |
| plants and equipment for industrial waste |
| gas storage systems |
| wind systems |
| systems, machinery and equipment for the pharmaceutical industry |
| Cables – accessories |
| Boilermaking, naval |
| Boilermaking, heavy |
| Chains – accessories |
| small aeronautic parts. |
| Air conditioning, aeration and ventilation equipment |
| Plastic material – tubes and pipes |
| welding equipment |
| Plumbing, industrial |
| Aerospace and aeronautics – construction |
| Aeronautics – equipment |
| aeronautics |
| mechanical constructions |
| mouldings |
| Mechanical engineering – custom work |
| Measurement and regulation equipment and instruments – output and flow |
| Measurement and regulation equipment and instruments – pressure |
| Metal construction, lightweight |
| Industrial building construction |
| turbine meters |
| distribution of methane |
| Extraction machinery and equipment – minerals and ores |
| Mining services |
| Environment – services |
| Nuts |
| torque wrenches |
| Erection and dismantling of industrial plants |
| Assembly of steel constructions |
| Offshore drilling services |
| Offshore construction |
| Offshore services |
|
|
| maintenance |
| mechanical equipment maintenance |
| Maintenance work – contractors |
| electrical panel design |
| Design and manufacture of all sorts of bridges |
| Design and manufacture of steel architectural structures |
| Design and manufacture of petrochemical plants |
| hvac design |
| offshore platform design |
| Paper – collection and recycling |
| Perforation of steels and metals |
| Compressed air tools and systems |
| Oil – distribution |
| Petroleum fuels and additives |
| Pneumatic systems and tools |
| Pipes and tubes, precision – ferrous metal |
| Recycling and recovery – miscellaneous materials |
| paper scrap recovery |
| Bridge renovation |
| Factory renovation |
| Building renovation |
| Repairs – industrial equipment |
| Stainless steel unions |
| Rubber and plastic – processing |
| Rubber products |
| Shipbuilding |
| Naval engineering yard |
| Shipyards – construction |
| Shipyards – repairs and maintenance |
| Ship equipment |
| Ship maintenance and repairs |
| Naval construction |
| Screws |
| Cutting – steels and metals |
| Special screw |
| Steel |
| Steel, crude |
| Steel, special |
| Iron, steel and metallurgy – import-export |
| Steels and metals – surface treatment and coating |
| Steels and metals – machining |
| construction, metal |
| Supplier of steel |
| steel dies |
| steam turbines |
| process control and industrial automation systems |
| pressure tanks |
| Tanks, metal |
| thermocouples |
| tower cranes for construction |
| Hoisting brackets – cranes |
| Transport – wide and long loads |
| Tunnel construction |
| equipment for the petrochemical industry |
| fall prevention system and equipment |
| Safety control for industry |
| valves for industrial fittings |
| anchorages |
| Diesel engines |
| Engines, internal combustion – components and parts |
| Removals – industrial facilities |
| new and used tower crane rental |
| Heating and air conditioning – works |
| heating methane |
| Aircraft engines |
| incinerators and combustion plants with energy recovery |
| Heat exchangers |
| Water – production and distribution |
| water distribution |
| Civil engineering – contractors |
| Marine, port and underwater works – contractors |
