Tang X, Wang N, Chen W, Wang Y. Study on the Equilibrium of the Closed Loop Supply Chain Network Considering the Quality of Old Products based on E-commerce Opening up the Second hand Market. FEM [Internet]. 2026 Aug. 10 [cited 2026 Aug. 14];7(8):147-55. Available from: https://fieam.org/index.php/ojs/article/view/296