... -7m 2,width:1600mm 3,material:PP or PE 4,OEM & DIY sheet for warning sign PP poster board 1, specifications: ... proof, eco friendly, recyclable, reusable2,advantages: environmental protectrecyclable material.usagepackaging,storage.materialPP(polypropylene),PE(poyethylene).factory directly offer 3 ... production4,detailed or related picture: Corrugated sheet for printing warning sign PP poster board