With a premium placed on the recycling of secondary metals, we have built facilities for the following integrated operating process of this business segment: primary processing of waste with metals-deep processing-reuse of metal, and we are committed to developing circular economy with clean production technologies. Based the combination of pyro- and hydrometallurgical steps for multi-metal materials, more than 20 kinds of non-ferrous metals and rare earth metals are efficiently recovered through step-by-step separation and hierarchical concentration. This has reduced carbon dioxide emissions by two million tons every year, slowing down the exploitation of mineral resources and contributing to the national strategic plan for metals.