Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; air valves for steam heating installations; ash conveyor installations, automatic; ash pits for furnaces; boiler pipes [tubes] for heating installations; brackets for gas burners; coils [parts of distilling, heating or cooling installations]; expansion tanks for central heating installations; feeding apparatus for heating boilers; fittings, shaped, for furnaces; flare stacks for use in the oil industry; flues for heating boilers; furnace ash boxes; gas condensers [other than parts of machines]; gas scrubbing apparatus; kiln furniture [supports]; loading apparatus for furnaces; regulating accessories for water or gas apparatus and pipes; regulating and safety accessories for gas apparatus; regulating and safety accessories for gas pipes; regulating and safety accessories for water apparatus; safety accessories for water or gas apparatus and pipes; heat exchangers, other than parts of machines; heat exchangers for chemical processing; evacuated heat pipe solar collectors [heat exchangers]; evaporators; gas boilers; heating boilers; industrial boilers; boilers, other than parts of machines; steam boilers, other than parts of machines; steam heating apparatus; steam generators; gas burners.;
Building construction; repair; installation services; boiler cleaning and repair; burner maintenance and repair; machinery installation, maintenance and repair; pipeline construction and maintenance; repair information; rustproofing; repair and installation of heat exchangers being other than parts of machines; repair and installation of heat exchangers for chemical processing; repair and installation of evacuated heat pipe solar collectors being heat exchangers; repair and installation of evaporators; repair and installation of gas boilers; repair and installation of heating boilers; repair and installation of industrial boilers; repair and installation of boilers being other than parts of machines; repair and installation of steam boilers being other than parts of machines; repair and installation of steam heating apparatus; repair and installation of steam generators; repair and installation of gas burners.;
Scientific and technological services and research and design relating thereto; technical research in the field of heat exchange; design of heat exchangers, evaporators, gas boilers, heating boilers, industrial boilers, steam boilers, steam heating apparatus, steam generators, and gas burners.;