... .save energy 40% 2.lifetime more than 30000hours 3.TUV/CE approved Lamps Lighting Product Advantages: A T5 dual tube fixture is ... , PF≥0.99, THD≤10%, Life = 30,000 hours, TUV CE,CB,GS,ENEC,UL Certified;TUV Standard Ballast, PF≥0 ... .98, THD≤15%, Life = 20,000 hours, TUV CE Certified;Normal High Standard Ballast, PF≥0.95, THD≤30 ...