Energy Saving Lamp:4U-11W 1)8000-10,000 hours lifetime 2)UL,CE,GS,EMC,RoHS,ENERGY STAR,ERP,ISO ... 3)1,500,000pcs/month 4U CFL Energy Saving Lamp: 4U-11W1)1,500,000 pcs/month2)Up ... Flicker free4)High luminous efficiency, up to 80% energy saving5)Excellent color rendering, nice light distribution6)OEM ... 650082520080001772334Hangzhou Qianlong Electronic Co., Ltd 4U CFL Energy Saving Lamp: 4U-11W