Global Air Humidifier Market Size, Trends and Growth Opportunity, By Humidifier Type (Vaporizers, Impeller Humidifier, Ultrasonic Humidifier, Wick/Evaporative Systems), By Application (Commercial, Industrial, Residential), By Distribution Channel (Multi-brand Stores, Exclusive Stores, Offline Retail Stores, Online Retail Stores), By Product (Portable, Whole House), By Region and Forecast Till 2030.