... :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% ... more brightness,high efficiency5.No noise,no flicker, low work temperature,low power consumption6.Long lifetime,>10000hrs,energy saving up ... ,hotel,office etc T5 Batten fixture with high quality electronic ballast