... looking for cheap and discount dynamic led slim sign in stock, and quality easy-maintanable dynamic led slim sign made in China ... efficiency & energy saving: saving over 60% enery companing with traditional light box4.Brightness: line light source transformed to flat ... frame seriesPF1, PF2, PF3, PF4, PF5, PF6Dynamic LED Slim Sign >>LED strip with up-to-date controller, colorful and varied, brightening ...