1, automobile exhaust mainly refers to the exhaust from the exhaust pipe. Exhaust gas contains 150 to 200 different compounds, of which the most harmful are carbon monoxide, hydrocarbons and so on. Excessive emission of harmful gases will cause air pollution, which will lead to a series of symptoms such as chronic bronchitis and decreased lung function in exposed people, and even cause lung cancer and thyroid cancer. Serious damage to human health.

2, tailpipe emissions do not meet the standards of the vehicle can be installed tailpipe purification devices to improve.

3, gasoline vehicles can be installed three-way catalytic device + electronically controlled make-up air system, diesel vehicles should be installed tailpipe smoke purification device.