... and oil mist filtration functions of the patented Kelantechnics Electrostatic Precipitator(ESP).2. Our Exhaust Oil Mist Collecting ... hood, the cover, the control panel,the ESP (Electrostatic Precipitator) air filter, and other major components for ... shopping centers, etc.7. Patentedcy lindrical honeycomb electric fields (electrostatic air filter) and optional PLC controlled spray-style humidifier, ...