... use of the energy,long life span is average about 20000Hrs.3.High power factor,Low THD ,the electronic ballast can work steadily when ... ,T12 Tube.6.The electronic ballasts have CCC,CE,RoHs,EMC2×40W Electronic ballast with PF0.98,THD<20%,CCF<1.7,quick/preheat start (option),with ...