1.Crystal Slim Light-box 2.Thickness:10-13mm 3.Panel:Silkscreen , ... .Size: A1,A2,A3,A4A5 5.Lighting source: LED Crystal Slim Light-box Single faceThickness:10-13mmLighting source: LED (Two sides LED ... ,show hall,exhibition center company sign ,house and office etc. Crystal Slim Light-box