Portable metal buildings; building materials made of metal, namely, soffits and fascia; reinforcing materials made of metal for building purposes; metal scaffoldings, poles, masts, and metal structures in the nature of racks, profiles and frames, all for mounting photovoltaic and thermal solar arrays on roofs and facades; power supply-line masts made of metal, roofing made of metal; metal heating, ventilating, and air conditioning ducts; pipe joints made of metal

[ Photovoltaic systems comprising solar collectors and electronic cables; electrical controlling and regulating devices for solar plants and photovoltaics both for internal flow of operations and for positioning control of the collectors and modules ]

[ Solar-thermal power plants, primarily consisting of solar collectors with electronic devices, pumps and ducts made of metal for heating purposes; heating installations; air-conditioning installations; air heating installations; heating solar collectors; solar furnaces; heat pumps; heat accumulators; heat exchangers not being parts of machines, and heating boilers; power plants; gas burners; regulating and safety accessories, namely, liquid flow regulating apparatus in the nature of hydraulic compensators, thermostatic meter valves, and electric lighting fixtures in the nature of power failure backup safety lighting, all for use in connection with water heaters and pipes, solar collectors, heating installations, heat pumps, heat accumulators, heat exchangers not being parts of machines, and heating boilers ]

[ Installation, maintenance and repair of power plants, machines and their parts used for the generation of solar, wind and geothermal electrical power and for the processing of biomasses for the generation of energy; roofing services; carpentry ]