... ,railway stations,subways,airports,bus stations,banks,bars,night clubs and etc..... 1.el backlight is used for backlighting:2.el ... backlight is used for advertising: 2.advantages and charateristics:1. Thin: Thin as paper, about 0.5mm thick ... consumption: About 70% less than traditonal light box.5.Soft and uniform light 6.Easy to install, can hang or paste ...