1 soft bag has the best sound insulation effect, rich modeling and high decorative effect, but the process is complicated and the cost is high.

Hard packaging has good sound insulation, rich shapes, high decorative effect, complex technology and high cost.

The special sound-absorbing board has the advantages of good sound absorption, single shape, general decorative effect, simple technology, convenient construction and relatively high cost.

The wallpaper sound insulation cotton has good sound insulation effect, single shape, diverse decorative effects, simple technology, convenient construction and affordable cost.