Air pollution is caused by human activities or natural processes caused by some pollutants into the atmosphere, showing enough concentration, enough time, and therefore harm the human comfort, health and welfare or the environment phenomenon.

Atmospheric pollutants are substances that are discharged into the atmosphere as a result of human activities or natural processes and have harmful effects on the environment or people. Air pollutants can be classified into primary pollutants and secondary pollutants according to the formation process. Primary pollutants refer to pollutants discharged directly from pollution sources, while secondary pollutants are new pollutants formed by chemical reactions or photochemical reactions of primary pollutants that are completely different from the physical and chemical properties of primary pollutants and are more toxic than primary pollutants.

An adult breathes about 20,000 times a day, inhaling 15 to 20 cubic meters of air. The polluted air enters the human body and does direct harm to the human body. Air pollutants, especially sulfur dioxide and fluoride, are also very serious to plants. Therefore, effective control of air pollution and control of pollutant discharge have become the top priority of current environmental protection work.

 Blue sky, white clouds and clear water have become the basis for a better life and the expectations of the people. At present, China's air environment quality is stable and improving, but there are still many difficulties and challenges in the next step to promote the continuous improvement of air quality. Therefore, "precise, scientific and efficient pollution control" is particularly important.

According to the needs of air quality improvement and control countermeasures, Jiufang technology adopts the most advanced treatment technology, tailor-made scientific, efficient and accurate atmospheric environment treatment solutions, and realizes the whole process of pollutant emission control from the source to the discharge, and strives to create the world's leading air pollution whole-process solutions integrating data management, model simulation, intelligent analysis and supervision. To provide customers with air quality forecast and early warning, accurate pollutant source tracking and diffusion assessment, intelligent analysis and judgment, business assessment system and other one-stop comprehensive services.

In 2021, Ninecosmos and Comde Runda jointly provided whole-process air pollution treatment services for Suqian District, Suqian City, and successfully improved the air quality improvement rate of Suqian City to the second place in the province, from the second from the bottom to the eighth positive number. PM2.5 was controlled below the target concentration, and the comprehensive compliance rate of good weather was 82.72%. The number of days that the annual target is exceeded.

The earth is the only home for the survival of all mankind, and the prevention and control of air pollution concerns the long-term development of society and the happy life of every citizen. We cannot stand alone, breathe together, assume a common responsibility, and act quickly. We should start from ourselves, start from now, and start from the things around us within our ability.