Sound-absorbing effect is good, FR,Rohs,svhc Noise reduction GB,BS-5852 or TB117 sound insulation foam absorb a large number of incoming acoustic energy of the acoustic attenuation, reducing the interference and echo sound reflections ,improve the purity of the sound Dear friends, Hello, First of all, thank you very much for your concern of our products,In order to allow faster, more timely for you to provide accurate product and pricing and other information materials,Please send us the inquiry, inform us the following information. Thanks!Provide samples give me, is the best approach. Size Demand Quantity Materials and density (weight per cubic meter) Drawings Material Details Useage and product color and packaging requirements sound insulation foam Advantages: Factory directly sell, with high quality and competitive price,And we use environmental-friendly material, lead free,no toxin,All items we can make as customers requested Such as size,shape,color,material,packing,etc. Trade Terms: 1.Payment:30% in advance,70% balance to be paid before delivery. 2.Port of loading:Shanghai ,mainland china. 3.Price are negotiable based on the quantity