1,Tube diameter :T2,T3,T4,T5 2,100% Tir phosphor 3,Real power:>85% 4 ... hot new CE & RoHS high quality 5U lotus lamp ApplicationHome,hotel,restaurant,office,meeting room,shops and supermarket1.Warm ... comfortable if used in houses,home,bedroom,hospitals,hotels.2.Warm light :2700K:a soft light,we will ... It was designed to preheat the filament prior to lamp ignition in order to extend the lifetime of tube ...