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 ... in houses,home,bedroom, hospitals,hotels.2.Warm light :2700K:a soft light,we will feel pleasant,comfortable,peaceful used in ... hotels,restaurant and waiting room.3.Day light:6500K:this light is similar to nature light ,make us feel concentrate,used in ...