half spiral energy saving lamp 2,100% Tir phosphor 3, ... CE,(EMC ,LVD)ROHS,SAA,TUV, half spiral energy saving lampApplicationHome,hotel,restaurant,office,meeting room,shops and ... 25w-200w2.choice of different colors: white, warm white, cool white and colored3.using 100% troposphere tube,4..up to 80% energy saving ... designed to preheat the filament prior to lamp ignition in order to extend the lifetime ...