... chemical and musty od Article No: CFD820D1. Guangzhou Ceiling Dehumidifier 20L/DAY ADVANTAGEThis product is a refrigerated dehumidifier, ... its working principle is pumping moist air from the fan into the machine, refrigeration system (compressor, evaporatorsuspected forged ... efficiency, compact structure, thus running low vibration, low noise, the dehumidification large, low failure rate, long service ...