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cu studio shot of man's hand screwing white fluorescent light bulb into socket - energy efficient light bulbs stock videos & royalty-free footage00:22CU Studio shot of man's hand screwing white fluorescent light bulb into socket
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changing incandescent bulb to led light - energy efficient light bulbs stock videos & royalty-free footage00:10Changing incandescent bulb to LED lightLight Bulb, LED Light, Turning On Or Off
ms montage studio shot of illuminated incandescent light bulb changing into energy saving light bulb - energy efficient light bulbs stock videos & royalty-free footage00:18MS MONTAGE Studio shot of illuminated incandescent light bulb changing into energy saving light bulbLight Bulb
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