... sure the best energy saving, 4, Use PC tube and cover to insure the safety, 5, ... more than 70% energy compared with traditional fluorescent tube, 6, Strict quality control, aging test for ... 90~277V AC or DC Work Voltage DC36~DC40 Tube Material Aluminium & Clear PC Aluminium & Strip PC ... time 30000-50000HOURS Packing Carton Size : 655 x 273 x 210 mm, 30pcs /carton Replace Traditional Fluorescent Lamp ...