本研究之架構以循環經濟供應鏈管理為主軸，依照個案公司歷年生產、銷售、及歷年庫存回轉周次進行分析，進而針對各階段的庫存與相關要素所形成循環庫存控制因果，應用系統思考的因果關係加以說明供應鏈中各變項的相關性與影響性。本研究針對個案公司的實際運作現況進行分析，透過各階段庫存概念圖以上下游供應鏈的角度展開各階段庫存作為評估的基礎，可分為原料庫存、再生成品庫存、原料庫存三個階段。以存量流量的概念切入觀察，階段性的供給速率成為各階段庫存的共享風險，然而為使供給速率、製造速率、出貨速率能夠達成其預期效率，除了對生產效率之有效性的掌控以外，其上游庫存量的供應能力也是關鍵之所在，相互作用、相互依賴才能夠達到供需平衡的狀態。
This research is focused on the supply chain management for circular economy, based on the annual production, sales, and inventory revolving cycle of the case company, to study the cycle inventory control causality caused by the inventory and related factors at each stage and the relevance and impact of variables in the supply chain. This study analyzes the actual operation status of the case company, through the stage of the inventory concept map, the inventory of each stage is used as the basis for the evaluation. It can be divided into raw material inventory, recycled finished goods inventory, and raw material inventory. Based on the concept of stock flow, the staged supply rate becomes the shared risk of inventory at each stage. In order to achieve the expected efficiency of supply rate, manufacturing rate, shipping rate, control of the effectiveness of production efficiency, and the supply capacity of its upstream stocks need to be optimized to achieve a balance between supply and demand.
