... 15)Light efficiency >90%16) Lamp Holder/Base:T8 Led Chip Specifications: Led chip brand Epistar , epiled , taiwai chip ,or ... Built in constant current driver 2.High power factor >0.953.Passed CE,4.optional dimmable5.Photos Packing detail ... , Clubs, Offices, Schools, Hospital, Factories, Lighting boxes, Residential lighting, Building decoration lighting projects and so on. FeaturesA. Longer lifetime ...