91 regeneration, established in Hangzhou in 2006, is a professional comprehensive service platform for renewable resources. 91 regeneration has established a service matrix of "network + conference + journal", and set up multiple vertical subdivision websites to comprehensively cover nine renewable resource industries such as waste plastics, waste metals, waste rubber, waste paper, waste electronics and appliances and waste textiles. At present, there are more than 2 million renewable enterprise resources. Its 91 renewable network (information matching platform for renewable resources industry), 91 renewable Trading Center (online trading platform and offline trading channel for renewable resources industry) and 91 renewable SaaS (one-stop information solution for waste classification and renewable resources recycling) are three industry-leading service contents to create a new omni-directional and three-dimensional service model combining online and offline services, Promote the industrial informatization upgrading of renewable resources industry, actively promote the development of China's circular economy and low-carbon economy, and help the transformation of China's economic development mode and the adjustment of economic structure.