waves sound proof sponge 1.waves sound proof sponge 2.material:pu sponge 3.sound insulation effect is good

waves sound proof sponge

1.waves sound proof sponge

2.material:pu sponge

3.sound insulation effect is good.

4.about size,shape,density, and color of waves sound proof sponge, we can choose from them        according to customer's needs.

5.it is eco-friendly to environment ,and no harm to user's health.

6.reasonable price.

waves sound proof sponge