Customers come with a piece of sponge processing into the shape of egg sponge, wavy egg cotton, used for packaging shock, shock, slip, sound absorption, sound insulation, etc. . The concave-convex wave sponge has the basic characteristics of shock-proof, moisture-proof, sound insulation and so on, and has certain firmness, softness and cushioning. At the same time, a shock-proof material, wave sound-absorbing sponge this product has sound-absorbing, sound insulation, buffer, shock absorption, fire, anti-static, insulation and other functions, with good sound-absorbing and sound insulation effect.