... 3)Power:8w,14w,21w,28w,35w 4) high efficiency Features:1.Material:aluminum body with PC cover2.Adopt high quality ballast, ... comply with 3C,CE standard;can pass EMC and RoHs.3.High quality:PF>0.99, ... THD<10%,Usual quality:PF>0.95,THD<30%4. ... show case,hotel,office etc T5 Batten fixture with high quality electronic ballast