Gravofom is a Major Brand for the Manufacture of High-quality PVC Foam, NBR foam, and Cr Foam, Which Offers Better Performance and Durability for Diverse Industrial and Commercial Applications. Their PVC foam is Light, Water-resistant, and Ideal for Signage, Construction, and Maritime, While Their NBR foam Provides Excellent Oil and Chemical Resistance, Which Makes It Perfect for Gask... https://www.gravofoam.com/product.php/pvc-nbr-cr-foam