This article aims to present the applications inventory management by the case study of corporate excellence. Inventory management is how to manage goods which might be raw materials, finished products, on-the-process products, compositions, wasted products with the lowest cost, appropriate customers’ satisfactory and the balance of demand and supply. In addition, this article proposes how to use inventory management in retail business of tiles, bathrooms, kitchen and other equipment. It is mainly focused on how to minimize cost and manage the inventory properly. This article illustrates the case study of inventory management in Boonthaworn Ceramic Company Limited with