A single supplier, multi retailer with multi-item decision model is
the problem of concern that determines the replenishment quantity and
timing. This means that the number of periods and amount of products
that must be replenished as well as the type of products and the quantity
of them that must be carried by the vehicles and delivered to retailers is
determined by this model. The objective is minimizing the sum of fixed
vehicle cost, retailer-dependent material handling cost, transportation
cost and inventory holding cost of whole supply chain.