Air Purifier Market Size By Product (Mechanical Air Filters [Fiberglass Filters, Polyester Filters, Washable Filters, HEPA Filters], Electronic Air Filters, Sorbent Air Cleaners, Air Cleaners Using Photocatalytic Oxidation [Air Cleaners Using Photocatalytic Titanium Oxidation, Air Cleaners Using Other Photocatalytic], Air Cleaners Using Ultraviolet Germicidal Energy (UV-C), Packaged Air Cleaners, Ozone-Generating Air-Cleaning Devices), By Application (Non Residential [Commercial, Office, Institution, Healthcare], Residential, Industrial [Food & Beverage, Pharmaceutical, Construction, Livestock]), By Sales Channel (Online, Offline]), COVID-19 Impact Analysis, Regional Outlook, Price Trend, Competitive Market Share & Forecast, 2021– 2027