This product contains a high density polymer layer and a layer of polyethylene crosslink foam. This product will not lose its elasticity under pressure, and the reduction of the usual percussion sound is 11 db.
This product consists of combination a heavy polymer layer with an industrial felt layer. The elasticity and the difference in the density of these two layers help reduce the noise. According to the results of the road and urban research institute test, reduction of the usual percussion sound level of this product is 21 db.
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