To effectively reduce and control the noise from various blowers, such as Roots blowers, air compressors, axial exhaust fans, and centrifugal ventilators, our company addresses the noise sources of these blowers, which often have more than one frequency spectrum value. Depending on the different noise intensities, mechanisms of sound generation, and transmission paths, the requirements for noise reduction vary. In response, our factory has adopted targeted design, creating a series of silencers that have proven to be effective in numerous factories.