Being a part of supply chain, inventory is a list of stock and material available.
Ballard (1996) classified three types inventory, including: 1) Raw material and components which are defined as the goods, materials and stock that are purchased or bought by an organization; 2) Work in Progress or process (WIP) which is items partly completed or known as semifinished product with value added; and 3) Finished goods that are completed product and readily to sell in market. And this case study mainly focuses on the third type of inventory which is finished goods