Research on optimal acquisition quantity of used items with uncertain quality and sorting policy in remanufacturing

The strategy model of the optimal acquisition quantity of used items and the sorting policy in remanufacturing under uncertain quality condition is built.The decision-making process is divided into two stages.Firstly the optimal remanufacturing quantity is solved,and secondly the optimal acquisition quantity and the sorting policy are determined.It is further assumed that the remanufacturing cost can be known after the sorting process.The results show that the optimal sorting policy is independent of remanufacturing quantity,and the average cost of remanufacturing will decrease as more used items are acquired.