The company was founded in 1993 and listed on the Shenzhen Stock Exchange in 1997. The company adheres to the concept of green development, organically combines the two major businesses of recycling solid waste resources and ecological environment restoration, and continuously promotes technological progress and environmental protection in the industry. Through scientific and technological innovation and green development, we strive to become a leading international supplier and operator of ecological environment solutions. The company's main business is harmless disposal of industrial and urban solid waste and comprehensive recycling of secondary resources, soil restoration, comprehensive treatment and protection of arable soil environments, and high-standard farmland construction. The main products include refining rare metals (crude indium) and associated products (sponge lead, sponge tin, sponge bismuth). The company attaches great importance to technological innovation. As an important platform for scientific research and development and transformation of achievements, the company has undertaken dozens of national and local scientific research projects, obtained more than 300 national patent authorizations, 4 scientific and technological progress awards, hosted and participated in the formulation of 7 national and industry standards and regulations, and won many outstanding national intellectual property enterprises. It received honorary awards such as the Beijing Science and Technology First Prize, the China Light Industry Federation's Science and Technology Progress Award, the first prize of the China Invention and Entrepreneurship Award, the second prize of the Environmental Protection Science and Technology Award, the second prize of the Beijing Science and Technology Progress Award, the first prize of the China Industry-University-Research Cooperation Innovation and Promotion Award, the first prize of the Industry-University-Research Cooperation Innovation Achievement Award, the Beijing New Technology and New Products, and the National Catalogue of Major Environmental Technology and Equipment Encouraged by the State.