04
Natural gas; liquefied natural gas; fuels; gaseous and
liquid fuels; crude oil; oil derivative products;
non-chemical additives to fuel; compressed natural gas
(CNG); liquefied natural gas (LNG)
35
Retail sale of natural gas, liquefied natural gas, gaseous
and liquid fuels, crude oil; mediation in the conclusion of
commercial transactions and agreements for others in the
field of gas distribution and storage; providing commercial
information; information and consultancy services referred
to tariffs; market analysis
37
Construction services; repair of gas supply systems; repair
of pipeline systems; installation of pipeline systems;
installation of devices for gas supply and for gas
distribution; installation of pipeline systems for
transmission of liquids; construction, installation,
maintenance and repair of infrastructure for gas
transportation, including liquefied gas terminals and
pipelines; services of repair and maintenance of machinery
for mining, quarrying and construction and consultancy and
maintenance relating thereto; services in the field of
mining extraction; services of installation and repair of
heating, gas and ventilation installations; services of
vehicle maintenance and repair; services of petrol stations
and autogas stations; extraction of crude oil and natural
gas; services of construction and maintenance of pipelines
and gas pipelines; construction services for linear
structures, pipelines, electricity lines, electric tractions
and telecommunication supply lines; consultancy with respect
to the above services
39
Supply services for others in the field of energy; storage,
transmission and distribution of natural gas, liquefied
natural gas, gaseous and liquid fuels, crude oil; services
of transport and storage of goods; services of distribution
and transport of fuel, energy, heat, natural gas, liquid
gas; crude oil derivatives and gas derivatives; pipeline
transport services; services of tankless storage of natural
gas and underground waste storage
42
Research and scientific and technical services and design
relating thereto; industrial analysis and research services;
design and development of computer hardware and software;
engineering services; engineering services in the field of
gas transport, supply of gas, heat and energy and the use of
natural gas; technical project preparation; technical
consultancy concerning transport and storage of gases and
liquids; energy consulting; services related to research,
research studies and scientific and technical expertise and
engineering, construction and technological design; urban
planning services
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