Product Details: The dissipative silencers mainly reduce noise by porous sound-absorbing materials and are mainly used for MF and HF noise generated in pipelines of ventilation and air conditioning systems, and inlets and outlets of machine rooms and aerodynamic equipment. Their structural forms generally include pipe type, sheet type, honeycomb type, folded plate type, sound flow type, matrix type, etc. Their noise reduction and resistance requirements can be customized according to customers and the noise reduction capacity is 10-40dB (A).