04
Gas; gas mixtures (fuel)
07
Fuel pumps
11
Gas operated apparatus for lighting, heating, steam
generating, cooking, refrigerating, drying, ventilating,
water supply and sanitary purposes; installations for
cleaning, filtering, separation, incineration and
liquefaction of gases
35
Retail of gas; business administration service connected
with gas production and distribution; sale promotion
activities related to gas production and distribution
37
Installation, maintenance and repair services of gas
operated apparatus and gas supply systems
39
Transmission, distribution, supply, transportation and
storage of gas; consultancy on energy supply and
distribution to energy supply network operators
40
Gas production; processing of gas; processing of gases;
purification of gases; filtration of gases; incineration of
gases; liquefaction of gas
42
Scientific and technological services and research and
design relating thereto in relation to the energy sector;
industrial analysis and research services in relation to the
energy sector; software design and development for use in
the energy sector; consultancy in the field of
energy-saving; advisory services relating to the use of
energy; consultancy in the field of energy efficiency;
technological advisory services relating to the use of gas;
design of engineering works relating to gas pipelines and
heating solutions; technical planning of infrastructural
facilities for gas transport purposes; engineering services;
remote diagnosis services for monitoring the condition and
function of gas operated apparatus and gas supply systems;
remote diagnosis services for ascertaining the cause of
malfunctions in gas operated apparatus and gas supply
systems; design and development of energy distribution
networks; engineering services relating to energy supply
systems
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