9
Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, including those working on renewable energy; parts of the aforementioned goods not included in other classes; installations for (renewal) energy generation, conversion and/or storage; (renewable) energy generation and conversion installations; installations, equipment, instruments, internal apparatus components (fixtures) and components for transport or for transmitting, distributing, transforming, accumulating, regulating or controlling energy, in particular cold and heat
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; apparatus and instruments for conducting, switching, transforming, accumulating, regulating and controlling heat and cold; apparatus and instruments for generating energy from heat and cold; installations and apparatus for (renewable) energy generation and energy transformation, namely installations and apparatus for generating heat and/or cold using renewable energy sources; apparatus for the accumulation of thermal energy (heat, cold); water supply apparatus
19
Building materials (non-metallic); non-metallic rigid pipes for building; non-metallic transportable buildings; water pipes, not of metal; building materials (non-metallic), namely materials for controlling heat and cold