... . 3.LED source High Luminosity 4.Ultra-thin LED Slim Light box: Ultra-slim, Ultra-shine, energy-saving, even luminosity, durable ... . Higher operating rate and conversion rate of light power, more brighter under the same light source condition6. Largest Size: 2m*4m, customerized ... *420285*408395*518445*568*707WA4210*290198*285288*375338*425*704W A-board light box display with supporting