Energy saving lamp 25 watt half spiral Energy saving lamp half spiral 25watt ModelRated powerBasePlasticTemperaturePowderLifetimeFull spiral 25 wB22PC2700kHalogen3,000hrs 25 wE27PP6500kMixed6, ... High center intensity, 2 times higher than normal spiral lamp, about 6 times higher than U shape ... official, fcatory areas etc. Half spiral and full spiral energy saving lamps are gradually replacing the 2U, ...