Product management system

A product management system in which a production management computer installed in a production plant of products and a management warehouse computer installed in a management warehouse for managing a process from arrival and storage of the products sent from said production plant to their shipment are connected with each other via a communication line,

• wherein said production management computer comprises:
• a pre-shipment data creating means for creating pre-shipment data including:
• product data including product identification data for identifying each of products and representing features of said products;
• and package identification data for identifying a package containing one or more of said products, said package identification data being associated with said product identification data;
• and
• a pre-shipment data transmitting means for transmitting said pre-shipment data to said management warehouse computer, and
• wherein said management warehouse computer comprises:
• a reader device for reading a first medium, said first medium being provided on said package and bearing the package identification data of said packages;
• and
• an incoming product inventory management means for storing the package identification data, excluding said product data, in a storage medium as data on actually received incoming products by assuming that products corresponding to the product identification data associated with said package identification data have arrived if the package identification data are read from said first medium read by said reader device and the package identification thus read exist in the pre-shipment data that had been stored in said management warehouse computer.