... 4.ISO9001,CE,ROHS,UL,GS cetified product details1)name:(YH 4U-17C) 4U energy saving lamp2)Tube diameter:17mm3)power ... :55w,60w,65w,75w,85w4)corresponding lumen:3685,4020,4355,5025,5695LM5 ... )certification:CE,ROHS,UL,GS,ISO9001:200011)diffenrent specification available (YH 4U-17C) 4U energy saving lamp