Eindhoven, the Netherlands – Signify (Euronext: LIGHT), the world leader in lighting, has expanded its Ultra Efficient product lineup with its most energy-efficient LED tube to date. Thanks to its high efficacy, the Philips MASTER LEDtube UE can help customers tackle the global energy crisis, mounting pressure to lower carbon footprints, and stricter EU regulation.   Signify last year broke new ground with the launch of the Philips LED A-class bulb, which consumes 60% less energy than a standard Phil...