35 Advertising, business management; sales promotion; wholesale and retail store services featuring chemicals used in industry, science and photography, solidified gases for industrial purposes, silicon, silicon compounds, apparatus and instruments for generating, conducting, switching, transforming, accumulating, regulating or controlling electricity, photovoltaic apparatus and installations, photovoltaic modules, solar and light panels, solar sensors, solar cells, solar modules, solar collectors, solar cells, solar panels, solar energy generating modules, accessories for photovoltaic installations, in particular power inverters, apparatus and installations for receiving, storing and processing solar and light energy and for the conduction, storage, managing and controlling of electricity, batteries for receiving and storing solar and light energy, apparatus for heating, steam generating and water supply, aforementioned apparatus also operating on solar energy, solar collectors, solar boilers, solar heating panels, solar furnaces, heat pumps, heat switches, heat accumulators, heat generators, installations for lighting