A receiving section receives a supply request for product from a terminal set up at a shop or a terminal used by a client. A first determination processing section determines whether a product in stock can be reserved for an order. A first reserve processing section reserves the product in stock for the order when the first determination processing section determines that the product can be reserved. A second determination processing section determines whether a semifinished product necessary for manufacturing a final product can be reserved when the first determination processing section determines that the product reserve is impossible. A second reserve processing section reserves the semifinished product for the order when the second determination processing section determines that the semifinished product can be reserved.