• Piyawan Puttibarncharoensri
  • Piyathida Chaipunya MSc. Supply Chain Management student at the Martin de Tours School of Management and Economics, Assumption University.
  • Vilasiness Srisarkun lecturer in Supply Chain Management at the Martin de Tours School of Management and Economics, Assumption University.
Keywords: Export process, DMAIC, process mapping, fishbone diagram, brainstorming


This study applied the DMAIC (Define, measure, analyze, improve, and control) method to improve the export lead time. The export operation is considered in the optimization of lead time in supply chain management which mainly focuses on export daily operation in the internal process in the company. To understand the risk area, process mapping is used to show the existing export process and find out the critical issue to be analyzed. Then, the fishbone diagram is applied to analyze the export process and help the company identify the root cause of the problem. Next, brainstorming is applied to find the alternative solution. The best solution was identifying and selecting to improve the current process. The implementation plan was proposed to related export process members in order to implement the new process of the export procedure and workflow for achieving sustainable procedures to improve the company’s operations.
After the implementation of the best alternative solution, the process has shown significant improvement in lead time performance. The company gains advantages from the increased capacity in workload and lead time reduction. These contribute to the standardization work in the export operation of the company.