Abstract Depending on a field study for one of the largest iron and paints warehouses in Egypt. this paper presents a new multi-item periodic review inventory model considering the refunding quantity cost. Through this field study. we found that the inventory level is monitored periodically at equal time intervals. https://www.diegojavierfares.com/quick-offer-Little-Ollie-174-Dwarf-Olive-Monrovia-super-sale/