double fluorescent lighting fixture,use tri-phosphor powder tube and solid mecury,high efficiency,1*28w,2*28w double fluorescent lighting fixture Power: 2*28w, ... %),low THD(<10%) 4.Use tri-phosphor powder fluorescent lamp,more brightness,high efficiency 5.No noise,no ... 7.Installation:Ceiling mounting, series connection Application: House lighting, shopping mall,refrigeratory,show case,hotel,office etc