Acoustic panel

The sound absorbing board is a composite board made of a double-sided (or single-sided) metal sheet with a sound absorbing hole as the surface layer, sound absorbing rock wool or sound absorbing glass wool as the core layer, and a one-time pressing molding by special professional equipment within a certain period of time. The bottom surface of the metal plate body is densely rounded and the upper part is also concave around the forming triangular cones. Accordingly, the reflected sound waves collide and interfere with each other to produce attenuation. At the same time, the core material has a very significant reduction effect on the transmission of noise, in order to achieve better sound absorption effect. The hole is arranged on the top surface of the metal plate body to form a micro-wavy surface, and corresponds to an elliptical micro-hole on the wavy surface