Ear muff /Wind-proof Foam Sponge/noise reduction foam sponge/foam sponges sound proof/sound insulation sponge Product Specification: Trade Name:Ear muff /Wind-proof Foam Sponge/noise reduction foam sponge/foam sponges sound proof/sound insulation spongeMaterial:Polyester and Polyether foamDensity:10-100 ppi Thickness:Could be customized according to customer’s requirements.Width:Could be customized according to customer’s requirements.Color:Could be customized according to customer’s requirements.Function:Good Sound-absorbing and Noise reduction appearance, etc. Industry Standard:GB,BS-5852 or TB117. Absorbing the incoming acoustic energy of the acoustic attenuation play a role in reducing indoor reflection sound interference and feedback to improve the purity of the sound
