PU Sponge PU material has different density, elasticity, rigidity and other physical properties PU SpongePU is an acronym for Polyurethane ... simply amend the formula can be obtained for different density, elasticity, rigidity and other physical properties. At ... filler -Aerospace, automotive industry -High-end sports equipment -PU synthetic leather -Footwear industry, General Paint ,Adhesives, etc. ...