在 Chen與Liu (2007) 的模式已提出考量生產者與購買者雙方達成最大利潤的供應鏈純採 購系統運作模式，然而在其模式中並未考量較完整的製造成本模式與涵蓋有關消費者使用成 本的問題，因此，本研究將提出考量消費者使用成本的修正Chen 與Liu 模式，並採Taguchi 的二次品質損失函數來量測其產品品質。在達成買賣雙方最大化利潤條件下，以求得購買者 最佳採購數量以及生產者最佳的製程平均數。

In 2007, Chen and Liu’s model presented the optimum profit model between the producer and the purchaser for the supply chain system. However, their model did not consider the used cost of customers in pure procurement policy. In this study, the author proposes a modified Chen and Liu’s model with normal quality characteristic of product for determining the optimum process mean and order quantity. The optimum purchaser’s order quantity and the producer’s process mean will be jointly obtained by maximizing the expected total profit. Taguchi’s symmetric quadratic quality loss function will be applied in evaluating the product quality.