şekil

Drilling rigs; anti-blow up equipment for drilling; well drilling machines; wellhead valves; oil-well pumping machines; installations for exploration of wells included in this class; separators; heat exchangers (parts of machines); gas pumping units; gas distributing plants; turbo-expander units; gas turbine installations; turbo- compressor installations; compressor installations; pump installations; hydraulic equipment belonging to class 7; pneumatic equipment; valves (parts of machines); cranes (parts of machines).Turbo-cooling plants; regulating and safety accessories for water or gas equipment and pipelines.Heavy-tonnage caterpillar trailers.Advertising; business management.Drilling of wells; construction of bearing and fencing structures of buildings and structures; construction and installation of engineering and transport networks; installation of systems, devices and measuring instruments; installation, maintenance and servicing of fuel and energy complexes; repair and maintenance of machine equipment; rebuilding of machines that have been worn or partially destroyed; information on repairs; supervising control over construction work; repair of gas supply apparatus and metalworking machines and apparatus.Conducting technical project studies; engineering; technical research; scientific and technical analysis; research and development of new products (for third parties); counseling in the field of environmental protection; exploration in the field of oil and gas for exploitation; quality control for oil and gas wells; updating of software; maintenance of software; software development; technological consultancy in the field of engineering.