Stock Photo - 21 August 2018, Germany, Sieversdorf: ILLUSTRATION: A halogen lamp (R) of a ceiling lamp is replaced by an energy-saving LED lamp. Photo: Patrick Pleul/dpa-Zentralbild/ZB. - Sieversdorf/Brandenburg/Germany

Stock Photo: 21 August 2018, Germany, Sieversdorf: ILLUSTRATION: A halogen lamp (R) of a ceiling lamp is replaced by an energy-saving LED lamp.

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