Legal analysis: the comprehensive atmospheric emission standard is the maximum allowable emission concentration of pollutants discharged through the exhaust pipe and the maximum allowable emission rate according to the height of the exhaust pipe. Any vent must meet the above two indicators at the same time. If any of them exceeds the standard, the pollutants discharged without organization shall be defined, and the monitoring points and corresponding monitoring concentration limits of unorganized discharge shall be defined.

Legal basis: People's Republic of China (PRC) Law on Prevention and Control of Air Pollution.

Article 11 The competent department of environmental protection of the people's government at or above the provincial level shall publish the atmospheric environmental quality standards and atmospheric pollutant discharge standards on its website for the public to consult and download for free.

Twelfth regularly evaluate the implementation of atmospheric environmental quality standards and air pollutant emission standards, and timely revise the standards according to the evaluation results.

Thirteenth formulate the quality standards of products containing volatile organic compounds such as coal, petroleum coke, biomass fuel, coatings, fireworks and boilers. , should be clear about the requirements of atmospheric environmental protection.

The formulation of fuel quality standards shall conform to the requirements of national air pollutant control, and be linked with the national air pollutant emission standards for motor vehicles, ships and non-road mobile machinery, and implemented simultaneously.

The non-road mobile machinery mentioned in the preceding paragraph refers to mobile machinery equipped with engines and transportable industrial equipment.