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Lumen statt Watt: Erweiterte Kennzeichnungspflicht für Leuchtmittel ab 1.9.2010
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Jämförelsetabell från Watt till Lumen
Jämförelsetabell från Watt till Lumen
LEDs Will Get Even More Efficient: Cree Passes 300 Lumens Per Watt
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Lumens vs Watts - Quality LED Stadium Lights Manufacturer and Supplier-UNU Light
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