... manufacture advertising equipment such as light box,showcase,sign panel,display rack,booth and so on. We ... Sticker): light-proof sticker,2 years span outdoor,3 years span indoor Light source:t8 philip,over 10000h life ... sign screen Front panel:pc board,hard to be broken,turn color 2 years span outdoor,3 years span indoor ... when closing and protect inside from dust. outdoor/indoor metro light box signage