การลดต้นทุนสินค้าคงคลังในอุตสาหกรรมอิเล็กทรอนิกส์

Abstract

This research was to investigate the problem of an electronic part manufacturing industry which faced with the high inventory cost. Therefore, in this research, the improvement of inventory management was considered in order to reduce inventory cost. The process began with categorize the importance of material/equipment based on its requisition value using ABC classification analysis. In this study, the highest material/equipment requisition cost was selected to study which referred the material/equipment categorized in group A. The purchase order pattern of stable material/equipment requisition was assigned by economic order quantity (EOQ). Whereas, a dynamic lot sizing model (DLS) and silver meal method (SM) based on Heuristic’s rule were applied for purchase order pattern of unstable material/equipment requisition. For the lowest material/equipment requisition, the purchase order pattern of Two Bin System were implemented. From the study, with a purchase order improvement applied to 271 items of material/equipment in group A; from January, 2018 to December, 2019; it was seen that the inventory cost was calculated to be 89,094.32 baht per year compared with the total inventory cost of 212,621.17 baht per year before improvement.