A0,A1,A2,A3,A4 LED Outdoor Single Side Light Box advertising used aluminium and clear acrylic. Ultrathin,portable,low power ... A0,A1,A2,A3,A4 LED Outdoor Single Side Light Boxoutdoor slim led light box Descriptions:1) LY crystal lightbox can be ... singled-sided and double-sided.2) The single-sided lightbox is made by 3 layers high quality Acrylic boards. The 1 layer is ...