◆Delicate acoustic design and aerodynamical computation provides a proper application for noise accuracy control on condition of minimum ventilation resistance and regeneration noise.

◆Needn't fill any sound absorbing stuffing.Accept any ventilation system cleanliness requirements.

◆Versatile and flexible choice of making according to different installation conditions, cleanliness and temperature resistant requirements.

◆According to different installation conditions, denoise requirements, noise source taking characteristic, resistance requirements and other factors, various models are available for you to choose.