Abstract:
This research aims to study supply chain and supply chains issue in Sukhothai eeg processing plant case study. The aim intend to develop inventory management model by studying current plants data which found inventory management issues. There were unsuitable management lack of production, stock, suitable quantity of supply information. The quantity of production was decided by entrepreneur base on this experience. So the factory couldnt forecast inappropriate quantity. The entrepreneur normally produced more than markets need, but sometime entrepreneur produced less which caused oversupply or shortage. Due to the issues, they caused sunk cost and dearth.
In developing process, Pareto ABC analysis, Economic Order Quantity, Reorder Point, Safety Stock and Forecasting were used to analyze consumers need. Due rapidly changing market condition, Sensitivity Analysis was included to analyze the case which perfectly match current economic situation.
As a result of using Pareto ABC analysis to analyze 15 SKU of egg processed product, it indicated that value of each product in A, B, C group and arranged importance of product in each
group. Then researcher calculate Economic Order Quantity, Safety Stock quantity and Reorder Point, and found that it can reduce 241,554.29 baht per year or 40.41% of total cost. Beside that researcher found appropriate quantity of each inventory type and appropriate time to reorder, decrease sunk cost and shortage.