... tech laser-dotting tech. 3.LED source High Luminosity Slim Light box: Ultra-slim, Ultra-shine, energy-saving, even luminosity, durable, ... qualiy LED or T5 light source5. Higher operating rate and conversion rate of light power, more brighter under the same light ... Size: 2m*4m, customerized size is available.7.Thickness: Ultra-slim, from 15-50mm8.Different varieties and specifications: water-proof, ...