... Zero Gas Generator is a new model developed by Wuhan Yuhong EnvironmentProtection Co., Ltd which has a patent number of 200920173411.5. ... Air Automatic Monitoring System which caneffectively remove water, O3,NO,NO2,CO,HC, methane and non-methane gases. Working principle The ... C9Gas tightness 3min-1.5kPa(minus pressure)10Temperature fluctuation of CO and HC remover±5°CSet value ±5°C11Temperature rising ...