4
Fuels (including motor spirit); Lighting fuel; Natural gas; Electrical energy from renewable sources; Electrical energy from non-renewable sources
7
Hydrogen distributor, For industrial use; Hydrogen dispensing pumps, For industrial use; Injectors for engines; Generators; Compressors for gases; Gas turbines; Gas actuated rams; Gas converters; Filters for gases [machines]; Pressure multipliers for gases; Inlet systems for gas turbines; Suction valves for gas compressors; Compressors; Compressors for gas recovery and recycling; Blowing machines for the compression, exhaustion and transport of gases
11
Space heating apparatus; Steam generating apparatus; Cooking appliances; Reactors for gas-gas reactions; Reactors for gas-solids reactions; Reactors being industrial chemical installations
40
Production of hydrogen; Treatment of natural gas; Purification of gases; Filtration of gases; Gas production services; Generation of gas and electricity; Energy production; Leasing of energy generating equipment; Consulting services relating to energy production; Recycling of chemicals; Recycling services; Petrochemical refining services; Processing of hydrocarbons; Processing of gas and oil; Processing of fuel materials; Processing of chemicals; Processing of hydrocarbon derivatives; Transformation of chemicals and processing of petrochemicals
42
Engineering services in the field of electrical power and natural gas production; Engineering services relating to gas transport and supply systems; Engineering project management services; Quality audits; Energy auditing; Engineering project design; Engineering design and consultancy; Computer aided graphic design; Conducting engineering surveys; Conducting technical project studies; Consultancy in the field of energy-saving; Civil engineering consultancy; Professional consultancy relating to the conservation of energy; Technical consulting in the field of environmental engineering; Technical project planning in the field of engineering; Development of energy and power management systems; Conducting technical project studies; Engineering feasibility studies; Engineering project studies; Technical project studies in the field of carbon offsetting; Environmental surveys; Environmental hazard assessment; Surveying; Providing technological information about environmentally-conscious and green innovations; Civil engineering; Providing of scientific information and advice relating to carbon dioxide offsetting; Engineering services; Preparation of engineering reports; Providing technical advice relating to energy-saving measures; Conducting research and technical project studies relating to the use of natural energy; Surveys (Conducting -); Conducting of quality control tests; Research in the field of ecology; Technical research; Environmental information services; Engineering services relating to energy supply systems; Advisory services relating to energy efficiency; Consultancy services relating to quality control; Conformance testing services; Testing, authentication and quality control; Engineering testing; Environmental testing of exhaust emissions