ceiling light fixture 1.Complied TUV-CE,RoHS 2.Power:8w,14w,21w, ... (PF>99%),low THD(<10%)4.Use tri-phosphor powder fluorescent lamp,more brightness,high efficiency5.No noise,no flicker,low ... up to 45%7.Installation:Ceiling mounting, series connectionApplication: House lighting, shopping mall,refrigeratory,show case,hotel,office etc ceiling light fixture (2*28w)