04
Gaseous nitrogen fuel; gaseous fuels; gaseous fuels in bulk
form; vaporized fuel mixtures; fuel; fuel gas; fuel gas in
bulk form; solid fuels; liquid fuels; liquefied natural gas;
natural gas; natural gas in bulk form; producer gas;
non-chemical additives for oils and fuels; electrical
energy
39
Supply of electrical energy, gas, water and district
heating; distribution of electrical energy, gas, water and
district heating; city gas supplying; gas supplying
(distribution); gas distribution; delivery of gas; storage
of gas; storage, distribution and supply of energy and fuel;
energy supplying; distribution of energy; distribution of
energy for heating and cooling buildings; storage of energy
and fuels; transport; storage; transport and storage of
goods; information and advisory services in relation to the
distribution of energy
40
Production of energy; processing and transforming of energy;
production and processing of fuels and of other sources of
energy; consultancy in the field of energy generation;
refining services; refining of natural gas; fuel refining;
gas production services; generation of gas and electricity;
gas processing services; processing of fuel materials; gas
compression services; purification of gases; treatment of
hazardous gases; treatment of hazardous liquids; treatment
of hazardous substances; air purification