Carbon monoxide is a great danger of toxic gas, it is not only colorless, odorless, tasteless, this toxic gas in the air is difficult to let people aware of, and at low concentrations can be poisoned. Carbonaceous material in the internal combustion engine, a gas stove or fireplace incomplete combustion will produce carbon monoxide, approximately 16,000 cases of carbon monoxide poisoning occur each year in the United States, where about 500 people were killed. Therefore, installed in place of toxic gases on methane gas alarm. This makes us the security to be effectively protected, so that when the toxic gas leak occurs, allow us to be vigilant, to take urgent measures. Jinan Xiang An prompts you for your interest in the the fire concern about health http://www.qitibaojingqi88.com.cn