7
Gas generators, in particular biogas generators; equipment and parts for gas generators; gas machines; gas engines; condensing installations; moisture traps; pumps; blowers; separators; strainers; filters; current generators; generators of electricity; amperage converters; current transformers; turbines; turbocompressors; thermal engines; grinding devices; stirring devices; centrifuges; filling devices; discharge devices; presses; conveyors; steam injectors; steam motors; pressure reducers; couplings; electric igniters; machine housings; lifting apparatus; lifting machines; lifting conveyor apparatus; boilers; bearings; sludge collectors; conveyor screws; valves; compactors; agricultural implements other than hand-operated; gear boxes other than for land vehicles; machines for the production or conversion of energy or energy carriers
9
Electrochemical supply terminals, in particular fuel cells; solar collectors and solar cells for the production of thermal or electrical energy; instruments and apparatus for installations for the production, conversion or storage of energy or energy carriers; testing instruments and apparatus; apparatus and instruments for the analysis of gases, liquids and solids; measuring instruments and apparatus; screens; switches; remote control devices; rectifiers; switching equipment; switch cabinets; switchboards; signalling apparatus; gas clocks; combustion gas analysers; heat control apparatus; data-processing equipment
11
Apparatus and installations for the production, conversion or storage of energy or energy carriers, in particular from biomass; parts of, and equipment and fittings for, the aforesaid apparatus and installations; biogas installations; equipment and fittings for biogas installations, parts of biogas installations; fermenters; reservoirs, containers, crushers, separators, stirrers, centrifuges, filling devices, discharge devices, presses, blowers, conveyors, filters, fittings, vacuum installations, waste heat recuperators, gas purifying apparatus, drying apparatus, gas burners, gas scrubbers, refrigerating devices and protective devices for the aforesaid apparatus and installations; heat exchangers
37
Building construction; construction of installations for the production, conversion or storage of energy or energy carriers; repair; installation services
42
Scientific and technological services and design relating thereto; engineering services; analysis; technical consultancy; providing of expertise; planning and development of installations and apparatus for the production, conversion, storage and use of energy and energy carriers, and consultancy in this field; engineering; computer programming