1 metro signs, 60% thicker 2 brighter,superficial lumen 1500,long light span 3 discolour resist Company info We have 10 years experience in manufacture advertising equipment such as metro signs.light box,showcase,sign panel,display rack,booth and so on. We are processing the outdoor metro advertising light box,metro light box , led metro light boxes,metro signs,and light box project for Shenzhen ...