... 4.CE,UL.RoHS Double-side Crystal Light boxsignature strengthsTransparent the borders,include single side and double side ,desk type, wall mounting type ... the slowest, the longest life expectancy. We focus on the screen, visual cutting-edge products and technology,and print on the ... best way.Can be made Right angle,curved angle,double-side and others.The normal sizes are A2-A5;Within 1200 ...