PURPOSE: A primary industry product auction and transportation management system through the Internet is provided so that members can conveniently read invoices, product information and sales information on the Internet, by executing sales, transportation and delivery of primary industry products through one management server connected through the Internet communication network. CONSTITUTION: A seller(2) accesses a management server(1) through a terminal connected to the Internet, such as a computer, and transmits product information for sales. The management server(1) confirms the ID and password of the seller(2), and stores the product information in a product information database(1b). In addition, a purchaser(5) searches a wanted product in a product list of the management server(1), and transmits a wanted price and number to the management server(1). The management server(1) confirms the ID and password of the purchaser(5), and stores the information from the purchaser(5) in a sales information database(1c). Then, the management server(1) compares the sales information database(1c) with the product information database(1b), selects the seller(2) and the purchaser(5) who satisfy the mutual conditions, stores the result in the sale information database(1c), and notifies the result to the seller(2) and the purchaser(5).
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