Elevator safety mark specification: 10cm*10cm material: high color "strength and toughness; high degree of material" is no ordinary photo paper technology: printing + abdominal light film "non-luminous" advantages of this process: one: font clarity brightly; upscale decent second: durable, is still bright as new in a few years. Usage: clean walls, rip the adhesive, paste this product has 2 different versions, typically at about elevator doors a sticker