Bulk Buy China Wholesale Rigid 6mm Black Plastic Foam Board 4x8 Black Pvc Foam Insulation Sheet For Advertising Poster Board $1 from Guangzhou Thinkon Building Materials Co. Ltd | Globalsources.com
Foamcore/foamboard Great for for Photography / Theatre / Film / Arts Crafts & More - Etsy
Gatorfoam Board – Clearly Plastic - Cut To Size Plastics