... our eyesight effectually with nofrequency twinkling and soft ray.5.Small cubage,it can be installed in anylighting convenienlty which should ... be matchwith T8/T4 lamp.Application:Hotels, chain restaurants,office buildings, museums, stadiums,exhibition ... T8/T5/PLL electronic ballast from 8w-58w,with a lamp,two lamps,three lamps and four lamps.(We also ...