This foam has the special concave-convex body and honeycomb curved surface structure. The honeycomb-shaped and hole-opened curved surface of the material, can cause the sound wave repeated reflection weaken and reduce the noise surface of the material, can cause the sound wave repeated reflection weaken and reduce the noise transmission . Many kinds of functions such as heat prevented, noise reduction and sound-absorption . These foam products are widely used in automobile and motorcycle engine, cooling tower,house decoration and so on. All the products can be customized Dear Friends, Thank you for your attention. In order to provide you accurate price and full information for your reference, pls kindly try to give us some specific infomation of the products you want to buy. If you have pictures about the products you want to buy ,send it to me will be the best!!! Thank you very much! I am here waiting for you Best regards! candy Foam density (kg/m3 & lbs/ft3) Size/ Dimension(Structure) Usage/ Application/ Drawings Quantity Color Package other details you have