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Photovoltaic cells and modules; photovoltaic cells also including a solar thermal collector sold as a unit; photovoltaic solar modules for production of electricity; photovoltaic solar hybrid modules; photovoltaic solar modules; PVT (photovoltaic thermal) modules; silicon solar cell material for electricity generation; solar batteries; solar cells; solar panels for production of electricity; solar wafers; silicon wafers; silicon chips; semiconductors; semiconductor chips; electrical controllers; converters