Zhonglan Environmental Protection Technology Co., Ltd.(referred to as "Zhonglan Environmental Protection", stock code: 300854.SZ) was established in 2001 and is headquartered in Shenzhen. It is now located in six major regional centers in China. It is one of the benchmark companies in the field of solid waste management in China, and serves as the vice chairman unit of the China Urban Environmental Health Association and the chairman unit of the Professional Committee of Domestic Waste Sanitary Landfill and Ecological Restoration. China-Lanzhou Environmental Protection implements the concept of green and low-carbon, with the integrated ecological landfill technology system as the core, and helps prevent and control the three major pollution areas of blue sky, clear water and pure land through the entire industrial chain model of pollution isolation, ecological restoration, resource utilization and comprehensive operation. Battle. Over the past 20 years, China-Lanzhou environmental protection core technologies have been successfully applied in more than 700 projects, covering 34 provinces, autonomous regions, municipalities directly under the Central Government of the country, as well as countries such as Mongolia, Vietnam, and Indonesia. It leads the industry in terms of technology application scale in solid waste and hazardous waste landfills, coal chemical industry, mining and other fields, and many technologies such as excavation and screening, and ecological restoration remain at the forefront.