4
Fuel gas; liquefied natural gas
7
Compressors for gas compression; valves as machine components; regulators, namely, regulators being parts of machines; expansion turbines, not for land vehicles; oil separators; machines and mechanical equipment dedicated to gas, petroleum, chemical or petrochemical industry installations, namely, boring machines
11
Installations and apparatus for fluid separation, namely, fluid separation apparatus for separation of gas from liquid in a chemical or oil refinery, and components thereof, namely, pressure relief devices sold as a component of fluid separation apparatus for separation of gas from liquid in a chemical or oil refinery; installation and apparatus for evaporation, namely, cooling evaporators and components thereof, namely, evaporator core sold as a component of cooling evaporators; gas condensers, other than parts of machines; gas separation equipment, namely, gas recycling system comprised primarily of pressure swing absorption equipment for the recovery, purification and return of gases in industrial applications; gas purification installations and equipment; heat exchangers for natural gas or hydrocarbon gas, not being part of machines; apparatus, installations and equipment for the treatment and liquefaction of hydrocarbon gas and natural gas, namely, ionization apparatus for the treatment of hydrocarbon gas and natural gas for industrial or commercial use; devices, apparatus and installations for production of gas and chemical products, namely, gas generating furnaces, for industrial purposes
40
Treatment of products, namely, liquefaction of gas and particularly of natural gas; gas production services
42
Engineering work, technical consulting services, plan preparation, technical project studies, industrial research and development services, studies and work provided by engineers, namely, appraisals in the nature of analysis of oil fields and sites; evaluations, namely, quality evaluation of natural gas properties, estimates, namely, gas production estimates, research in the field of natural gas production and liquefaction, and preparation of related reports in the fields of gas production and liquefaction, particularly relating to natural gas
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