... .Size: A1,A2,A3,A4A5 5.Lighting source: LED Crystal Slim Light-box Single faceThickness:10-13mmLighting source: LED (Two sides LED ,four ... are availableSize: A1,A2,A3,A4A5Application: Advertising or docoration purposes of shopping center ,super market ,franchised store ,restaurant ,subway station,club ... hall,exhibition center company sign ,house and office etc. Crystal Slim Light-box