waved foam : 1.material :customized 1.size: 1m*2m*(1.5cm-7.5cm) 2.feature: Sound-absorbing effect is good waved foam:featureSound-absorbing effect is good, functionSound absorbingUsesNoise reductionUse range KTV ,coffee shop, ,studio ectMakerDaye Dengyue Sponge/foam wave sound absorbing sponge is mainly based on material PU .there are many advantages such as high fireproofing ,strong air ...