... ,220-240v 4.ISO9001,CE,ROHS, product details:1)name:(YH XZ-2UB2) 2U energy saving lamp2)wattage:3w,5w,7w ... ,9w,11w,13w,15w3)corresponding lumen:150,250,350,495,605,715,900LM4)optional tube diameter:7m,9m,12m5 ... )certification:ISO9001:2000,EC,ROHS,UL,GS10)different specification available (YH XZ-2UB2) 2U 7mm 11W B22 energy saving lamp