In September 2013, the State Council issued the "Action Plan for Prevention and Control of Atmospheric Pollution" program, which became the guiding document for the prevention and control of atmospheric pollution later. In July 2016, upon approval of the State Council, the Chinese Academy of Engineering and the State Environmental Protection Department released the mid-term assessment report on the implementation of the "Action Plan for Prevention and Control of Air Pollution". The assessment concluded that although the air quality improvement effect has already appeared, the situation is still grim and the winter The problem of heavy pollution is prominent. The annual average concentration of PM10 in some provinces is on the rise. Beijing will need to make greater efforts to achieve the target of 2017 by the end of 2017. In 2017, the state places special emphasis on environmental governance, especially on pollutant emissions in the Beijing-Tianjin-Hebei region and the surrounding areas. Various policies are adopted to control environmental pollution so as to ensure the completion of the "Action Plan for Air Pollution Prevention and Control". On January 31, 2018, the MEP stated at its press conference: The goal of the "Action Plan for Prevention and Control of Air Pollution" has been fully realized. In the future, a three-year plan of winning and defending the blue sky will be formulated and implemented.

In 2017, in addition to implementing winter limited production in the "2 + 26" city located in the Beijing-Tianjin-Hebei air pollution transmission corridor, the state also proposed to implement special emission limit standards for industrial pollutant emissions and carry out uncontrolled emission control . Aluminum industry has been included in the key control industries in the region, environmental protection is facing unprecedented challenges.