1.Led crystal light box 2.size:A1,A2,A3,A4,A5 3 ... panel 4.poster can be changed 5.OEM service 1.LED crystal light box with poster changing2.Size:A1,A2,A3,A4 ... , Light panel, black back panel4.insert poster, easier change5.Led lifespan 80,000 hours6.Low power consumption,power-saving 60 ... different pictures8.Customer's design\ idea or OEM are welcomed LED acrylic crystal window wall mounted light box