Acoustic Louver, Acoustic Door, Acoustic Enclosure manufacturer / supplier in China, offering Aluminium Wing Curved Acoustic Louvers Integrating Custom Aluminium Sound Proof Acoustic Louvers for Air Flow Management, Engineered for Industrial Quiet: Rectangular Duct and Column Silencers for Cooling Tower Noise Control & Generator Room Ventilation, Column Silencer & Ventilation Rectangular Duct Silencer: Premier Noise Reduction for Cooling Towers and Generator Room Ventilation and so on.