Research On Multi-channel Mixed Recycling Mode Of Weee Closed-loop Supply Chain Based On Game Theory

With the rapid development of economy,the upgrading speed of electrical and electronic products is accelerated.Accordingly,a large number of waste electrical and electronic products(WEEE)are generated.At present,the Chinese government attaches more and more importance to economic recycling and sustainable development,and has issued relevant policies to promote recycling treatment of renewable resources such as WEEE,so that the recycling mode of WEEE has been innovated and developed.Among them,the emergence and development of new internet-based recycling mode has promoted relevant manufacturing enterprises to implement the "Internet plus WEEE" recycling mode.The choice of recycling mode is the primary issue that directly determines whether manufacturers could effectively recycle WEEE from consumers.It will affect the performance of the whole closed-loop supply chain.There are two typical market structures in today's market:one is the market structure dominated by manufacturers.In this structure,firstly,manufacturers decide the wholesale price and recycling transfer price of products.Then retailers decide the selling price and recycling price according to the wholesale price of manufacturers.The second is the market structure dominated by retailers.In this structure,firstly,retailers decide the selling price and recycling price of products.Then manufacturers decide the wholesale price and recycling transfer price according to the selling price and recycling price of retailers.Based on the Stackelberg oligopoly competition model in game theory,this paper studies the multi-channel mixed recycling mode of WEEE closed-loop supply chain under these two different market structures.The main research contents are as follows:Firstly,on the basis of the analysis of the traditional typical dual-mix recycling mode and Internet recycling platform,the third-party online recycling platform is introduced into the traditional typical dual-mix recycling mode,thus building the manufacturer,retailer and third-party online recycling platform(Model MRET),manufacturers,third-party recycler and third-party online recycling platform(Model MTET)and retailer,third-party recycler and third-party online recycling platform(Model RTET).These three new multi-channel mixed recovery modes have laid the realistic and theoretic groundwork for the concrete modeling and analysis.Secondly,under the market structure dominated by manufacturers,the three types(MRET,MTET and RTET)of new multi-channel mixed recovery mode decision problems are studied.This paper established three closed-loop supply chain models with multi-channel mixed recovery mode dominated by manufacturers,and used backward induction method to solve each model,thus obtaining the optimal decision variables such as the the optimal recycling price and profit of each main participant.It analyzed the relationship of each optimal decision variable with the processing funds and subsidies collected by the government,consumer's awareness of environmental protection and consumer's sensitivity to the parameter such as the sensitivity coefficient of recycling price and proved the correctness of the conclusion through numerical analysis.Sensitivity analysis is carried out on the sensitivity coefficient of recycling price,thus further exploring the influence of the parameters on each optimal decision.The the overall profits of the closed-loop supply chain(CLSC)were used to measure the performance of the CLSC systems under different recycling modes,thus proving that under this market structure,the system performance of the closed-loop supply chain under the mixed recycling modes of MRET and MTET was equal and optimal,while the system performance of the closed-loop supply chain under the mixed recycling mode of RTET was the lowest.Thirdly,under the market structure dominated by retailers,the decision-making problems of three new three-channel mixed recycling models(MRET,MTET and RTET)were studied.This paper established three closed-loop supply chain models with multi-channel mixed recovery mode dominated by retailers,used backward induction method to solve the problem,thus obtaining some important conclusions under this market structure.The numerical analysis and the sensitivity analysis of important parameters were also carried out.The results showed that the CLSC system performed best under the MTET hybrid recovery mode and the CLSC system performed worst least under the RTET hybrid recovery mode.In conclusion,under two typical market structures,this paper conducted modeling,solving and analysis on the multi-channel mixed recycling mode of the closed-loop supply chain with "Internet plus recycling",the research results had certain theoretical reference value and practical guiding significance for the economic management activities of manufacturing enterprises recycling WEEE.