The project belongs to the scientific and technological field: The comprehensive utilization of management projects of renewable resources is one of the important ways to realize a circular economy and an inevitable requirement for the construction of ecological civilization and sustainable development. In order to guide the healthy development of the renewable resource industry and promote the harmonious development of economy, society and environment, combined with the actual situation of renewable resource recycling parks and enterprises in China, a typical ecological demonstration park development model for the recycling of waste mechanical and electrical products with an efficient resource symbiosis network will be built. The wastewater, waste gas, Waste residue and noise are managed in full accordance with national standards, with zero dioxin emissions, reduced energy consumption per unit of GDP by 30%, and reduced material consumption per unit of GDP by 20%. Main contents and innovation points: (1) Build an evaluation technical method and system for the recycling of waste mechanical and electrical products to analyze and evaluate the technical, economic and environmental loads of enterprises in the park, establish a "State-Pressure-Effect"(PSR) ecological effect evaluation model, and build a comprehensive ecological evaluation system for the park. (2) Establish an industrial chain linkage model in the park based on the cascade utilization technology of typical waste mechanical and electrical product resources such as waste motors, waste wires and cables, waste hardware and electrical appliances, and the industrial chain linkage technology, develop optimization technologies for the integrated utilization of ecological resources in the park, promote, Demonstrate and apply a raw material or product-oriented industrial chain connection model. (3) Develop a pollution monitoring system, centralized and unified treatment control strategy and cleaner production indicator system for waste in the park. According to the requirements for centralized and harmless treatment of harmful substances, waste gas, wastewater, waste residue and smoke in the park, set points, sampling, monitoring and control principles, establish a full-process monitoring system and centralized and unified treatment control strategy for waste pollution and environmental harmlessness in the park, and establish a cleaner production indicator system for the recycling of waste mechanical and electrical products. (4) Form a development model for the recycling of waste mechanical and electrical products. The park management system, supervision and management system and green logistics management system are the basic guarantees for the construction of an ecological park. Combined with the park's industrial chain link model, cleaner production technology, and evaluation technology, it is promoted and applied Decentralized and centralized recycling ecological industrial demonstration park development model. (5) Put forward suggestions for the promotion and application of renewable resource industry ecological demonstration parks to confirm the strategic position of renewable resource industry as a core industry of circular economy, implement supporting plans and policies, refine environmental pollution prevention and control technical policies and specifications, and carry out standard pilot work in stages in several typical enterprises to promote and apply the construction and management experience of Ningbo Zhenhai Renewable Resources Industrial Park. Papers and patents: Published 13 papers (8 papers searched by EI). Application promotion situation: China Renewable Resources Industry Technology Innovation Strategic Alliance, Zhenhai Renewable Metal Resources Processing Park in Ningbo City and Tianshengqiao Characteristic Industrial Park Park Management Committee in Dongchuan Re-employment Special Zone in Yunnan Province issued documents in 2013, 2010 and 2011 respectively, requiring alliance members, park management agencies, and enterprises to promote and apply the research results of this topic, improve the management system and systems of the demonstration park, abide by the construction and management specifications of the demonstration park, and implement cleaner production. Carry out unified management of pollutant emissions and pollution control in the park.