Ventilation Fans Market (By Product Type: Axial Fans [Propeller, Tube Axial, and Vane Axial] and Centrifugal Fans [Forward Inclined Blade, Backward Inclined Blades, and Straight Radial Blades]; By Installation: Wall Mounted and Roof Mounted; By End Use: Residential, Commercial and Industrial) - Global Industry Analysis, Size, Share, Growth, Trends, Revenue, Regional Outlook and Forecast 2021-2030