1
Gases being raw materials for industrial purposes; gases for chemical purposes, gases for catalytic purposes, gases for inerting, gases for drying, gases being freezing agents, noble gases, mine gases
4
Gases for warming, heating and cooling, gases for lighting, gases being propellants, gases being driving gases, gases being operating material, gases being transport media, gases for energy generation, gases for combustion, coal gases, coke-oven gases
5
Gases for medical purposes, gases for respiration
6
Pipeworks of metal; caverns or containers of steel
7
Machines and machine parts for generating gas, including gas compressors, gas liquefiers and gas splitters, valves and pumps; machines and parts therefor, for generating and distributing energy, in particular heat, steam and electricity, in particular using alternative energy sources
9
Controls and regulating apparatus for generating gas; measuring and monitoring apparatus for generating gas; electricity conduits
11
Reactors; safety fittings for gas apparatus and gas pipes; cooling devices for storing and transporting gases
19
Non-metallic tubing; caverns or containers of concrete
20
Caverns or containers of plastic and/or ceramic
35
Commercial and technical management of energy-generating installations
37
Repair, maintenance and servicing of energy-generating installations
39
Distribution of electricity
40
Production of electricity