① Wood
Wooden sound-absorbing panels are exquisitely processed according to the principle of acoustics, and are composed of veneers, core materials and sound-absorbing thin felts. There are two types of wood sound-absorbing panels: split-slot wood sound-absorbing panels and perforated wood sound-absorbing panels.
② Mineral wool
The surface treatment of mineral wool sound-absorbing board is rich in forms, and the board has a strong decorative effect. The surface treated knurled mineral wool board, commonly known as "caterpillar", is covered with holes of different depths, shapes and diameters.
③ Fabric
Fabric sound-absorbing board—the core material is centrifugal glass wool. Centrifugal glass wool, as a long-term and widely used acoustic material all over the world, has been proven to have excellent sound absorption properties.