... efficiency:above 95% 2:CE Features of Exhaust Air Collecting Hood with Smoke Filtration Facility:1. Unique ... cover, the control panel,the ESP (Electrostatic Precipitator) air filter, and other major components for maintenance and cleaning. ... centers, etc.7. Patentedcy lindrical honeycomb electric fields (electrostatic air filter) and optional PLC controlled spray-style humidifier, maximizing ...