thousands SKU's, which is not easy to start for implementation. The researchers used the Pareto Rule 80:20 of total history purchasing of suppliers within 1 year to begin with. And then each supplier has requested to isolate the forecasting model in each product list. The warehouse management is applied by re-layouting with the concept of storage separating supplier. The reasons of re-layouting the warehouse are, first, to count inventory on hand and, second, to reduce inventory damaged cost.