protective packaging materials/packaging design sponges/precise instrument packing foam Product Specification: Trade Name:protective packaging materials/packaging design sponges/precise instrument packing foam Material:Polyester spongeDensity:10-100 ppi Thickness:Could be customized according to customer’s requirements.Width:Could be customized according to customer’s requirements.Color:Could be customized according to customer’s requirements.Function:anti-collision,light quality dustproof,breathable, shock absorption,Abrasion resistance, toughness, anti-vibration,etc. Industry Standard:GB,BS-5852 or TB117.