Beijing clean science and technology ltd. Is a major integrated high-technology and environmental enterprise specialized in indoor environmental pollution monitoring and management that combines product development, production, marketing and logistics management. The national centre for economic, political and cultural information, located in beijing, is based on the country’s strong scientific and technological information mix, which is more conducive to the creation of a multi-faceted industry in china. By virtue of its unique advantages, this emerging indoor environmental pollution has been purified and the industry has been rapidly radioactive throughout the country. In terms of policy information and technology creation, the thousands of countries are guided by the broad international vision of the chinese academy of environmental sciences, which, through its powerful industry guides, has consistently pursued its exit and introduction strategies, and has continued their academic exchanges; they have continuously introduced advanced technology and new products from abroad, and have established technical cooperation with scholars from the chinese academy of science and technology, china institute of building materials, qinghua university, beijing chemical university, china university of science and technology and ministry of space industry. Products with advanced domestic and foreign levels have been developed on the basis of the absorption of foreign technologies。