35
Arranging of buying and selling contracts for third parties relating to scientific, technical, engineering and project management, technical studies, design, construction, maintenance and repair of all kinds of works and buildings, procurement, inspection, expediting, and management of construction relating to oil and natural gas exploration, extraction, compression, refining and distribution facilities; procurement of construction relating to oil and natural gas exploration, extraction, compression, refining and distribution facilities
37
Construction services including drilling and laying of oil and natural gas pipelines; drilling of oil wells; construction of oil and natural gas processing and compression facilities; construction of oil and natural gas distribution facilities; automobile service station services for oil changes, alignments, general repair and maintenance; construction, maintenance and repair of all kinds of works and building; management of construction relating to oil and natural gas exploration, extraction, compression, refining and distribution
39
Operation of oil and natural gas pipelines for transportation or transmission of natural gas; operation of oil and natural gas distribution facilities; operation of transport facilities for oil and natural gas; electricity distribution, distribution of gas, arrangement of the distribution of hydrocarbons
40
Natural Gas and fuel refining services including refining, treatment and processing of oil, natural gas and fuel; generation of electricity; oil and natural gas production; operation of oil and natural gas processing and compression facilities
42
Services related to oil and natural gas exploration; engineering services relating to oil and natural gas production; oil and natural gas exploration, exploration of hydrocarbons, oil and natural gas well surveying, oil and natural gas prospecting, oil and natural gas well testing services, analysis for oil and natural gas field exploitation, geological, geophysical or any other kind of surveys for exploration and prospecting for oil and natural gas; technical consultancy services related to scientific, technical, engineering and project management, technical studies, design, construction, maintenance and repair of all kinds of works and buildings, procurement, inspection, expediting, and management of construction relating to oil and natural gas exploration, extraction, compression, refining and distribution facilities; scientific, technical, engineering and technical project management services, technical studies, and design of all kinds of works and buildings, inspection and management of construction relation to oil and natural gas exploration, extraction, compression, refining and distribution facilities; inspection of construction relating to oil and natural gas exploration, extraction, compression, refining and distribution facilities