... use Name : Traffic Sign/ Road Sign Spec.700mm/900mm/1100mm Material : aluminium , reflective film . Name : Traffic Sign/ Road Sign Spec.700mm/900mm/1100mmMaterial : aluminium , reflective film . Function :Show ... used in a lot of places Features :Different thickness of Aluminium plate is available : 1mm,1.5mm,1.8mm ,2.0mm ...