... chip, PF≥0.99, THD<15%, life time is 30,000h, 110V/120V/220- 240V.50/60Hz,pre-heating ... 240V,50Hz C) Ordinary Standard, PF≥0.95, THD<30%, life tim is 15,000h,220-240V,50Hz D) ... improve more light efficacy. Product Feature 1, Energy saving 30%~45% than traditional T8 , T10 tube.2,Good quality ... , project energy conservation improvement and so on T5 wall lamp fixtures built in EB 6w/8w/13w/14w/21w/28w/35w