Hunan Miluo Circular Economy Industrial Park is one of the first seven "urban minerals" demonstration bases in the country. "Urban minerals" refers to recyclable iron and steel, non-ferrous metals, non-ferrous metals, Resources of rare and precious metals, plastics, rubber, etc., are used in an amount equivalent to that of primary mineral resources. "Urban minerals" is an image metaphor for the large-scale development of waste resource recycling.