... light sign, light box, slim light box♥ Structure of single side crystal light box:♥ Material: acrylic panels, 5-10mm light ... screws;♥ Light source: LED lights (light on 2/4sides);♥ Color of light: red, green yellow, blue, purple, orange, pink, ... CCC, etc;♥ Application: widely used in business center, indoor decoration, chain stores, corperate signs, supermarket, airport, railway stations, subway, banks ...