11 devices and systems for the purpose of lighting, namely, external and internal lighting fixtures; devices and systems for the purpose of heating, namely, heat exchangers, boilers for heating buildings, radiators, valves for building heating systems; devices and systems for the purpose of steam generation, namely, steam generators and radiators for heating buildings; devices and systems for the purpose of cooking, namely, electric cooking ovens, electric cooking stoves; devices and system for the purpose of cooling, namely, refrigerating units; drying apparatus and systems, namely, air driers, liquid separators, steam separators, refrigerate driers, dehumidifiers; ventilation installation and apparatus ventilation exhaust units and hoods for buildings and stoves and ovens; air-conditioning apparatus and systems, namely, air-conditioners; water supply installations, namely, water conditioning units, water purifiers, water distribution installations, water conduits installations, water filtering apparatus; devices and systems for the purpose of cleaning, namely, air cleaners, air purifiers, air sterilizers; solid, liquid and gas fuel furnaces; solid, liquid and gas burners; cleaning and filtering apparatus, namely, separators and cleaners for purification and filtration of air and water; luminescent wire lights; luminescent light sources, namely, luminous lamps, luminous tubes for lighting; electrical lighting tracks comprising rectangular diode wires for marking and lighting of edges, stairs and traffic lines; devices and systems for lighting with luminescent wires, namely, luminous lighting fixtures and installations for lighting buildings