A system constituted by a product information supply server 2, an automatic graphic server 3, an order processing server 4 and a product information database 1. The servers 2, 3 and 4 may be connected to product information database 1 on a network 5, wherein product information is supplied and an order is accepted on the basis of a request from a customer terminal 6. The product information supply server 2 searches and supplies various pieces of product information in accordance with the request from the customer terminal 6. The product information supply server 2 searches a product specification database 11 on the basis of the product specification information entered from the customer terminal 6, extracts a call number of a relevant product from the product specification database 11, and supplies the call number of the relevant product together with price information and delivery to the customer terminal 6.