LED magnetic light box 2.size:A1,A2,A3,A4,A5 3. ... panel 4.poster can be changed 5.OEM service 1. LED magnetic light box 2.poster can be changed easily.3.transparent ... holder, Light panel, black back panel4.insert poster, easier change5.Led lifespan 80,000 hours6.Low power consumption,power-saving 60 ... \ idea or OEM are welcomed A1 A2 A3 A4 A5 LED magnetic crystal window light box