Yibin Haifeng and Rui Co., Ltd. is mainly engaged in caustic soda, polyvinyl chloride, cement, trichloroethylene and other products production. In the production process will not only produce a lot of smoke, dust, but also produce sulfur dioxide, nitrogen oxides, fluoride, carbon dioxide, carbon monoxide and other harmful gases, seriously harm health. Our company provides ASD5300C toxic and harmful gas detector and JB-TB-ASD5100 gas alarm controller.