half spiral energy saving lamp 2,100% Tir phosphor 3,Real power:>85% 4,Lifetime: ... 6000~10,000hrs 5,CE,(EMC ,LVD)ROHS,SAA,TUV, half spiral energy saving ... using 100% troposphere tube,4..up to 80% energy saving comparing with incandescent Bulbs5.8000hours long life and ... was designed to preheat the filament prior to lamp ignition in order to extend the lifetime of ...