... 2.soft surface 3.high efficient noise insulation wave sound absorbing sponge effect is good, function FR,Rohs,svhc Uses ... according to customer requirementsSizeProduction according to customer drawings featureSound-absorbing effect is good, functionFR,Rohs,svhcUsesNoise reductionIndustry StandardGB,BS ... DetailsUses and product color and packaging requirements wave sound absorbing sponge