The circular pointed out that energy-saving transformation and in-depth treatment of pollutants will be promoted with emphasis on iron and steel, non-ferrous metals, building materials, petrochemical and chemical industries. Promote energy-saving technologies such as high-efficiency rectification system, high-temperature and high-pressure coke dry quenching and oxygen enriched enhanced smelting, and encourage the transformation of blast furnace converter long process steelmaking into electric furnace short process steelmaking. Promote the ultra-low emission transformation of iron and steel, cement, coking industries and coal-fired boilers, complete the ultra-low emission transformation of 530 million tons of iron and steel production capacity by 2025, and fully realize the ultra-low emission of coal-fired boilers in key areas of air pollution prevention and control.

According to the latest news released by Tangshan labor daily, from 18:00 on January 23, Tangshan started the orange warning of heavy pollution weather, and the lifting time is unknown. All industrial and mining enterprises in the city stopped production and limited production according to the orange warning requirements. Previously, Tangshan issued a yellow warning of heavy pollution weather. This orange warning will further tighten the production restriction measures of industrial and mining enterprises.

"Double carbon" is a major medium and long-term strategy for China to deal with the global climate. "Double carbon" mainly includes two goals: first, "carbon peak", which means that the annual carbon dioxide emission of a region or industry reaches the highest value in history, and then enters the process of continuous decline in the platform period. It is also the historical turning point of carbon dioxide emission from increase to decrease, marking the decoupling between carbon emission and economic development. The peak goal includes the peak year and peak value; The second is "carbon neutralization", which means that the carbon dioxide directly and indirectly emitted by human activities in a certain area within a certain period of time (generally refers to a year) is offset by the carbon dioxide absorbed through afforestation, so as to achieve "net zero-emission" of carbon dioxide.