Abstract: Information about an article to be carried is written into a non-contact type IC card by a reader/writer on the side of a sending trade, and the IC card into which the information has been written is accommodated in a carrying bag to which a tag is provided and a paper-made slip is attached, and the carrying bag is stuck to the article to be carried. A conveying trade collects the article to which the carrying bag is stuck so as to convey it to a desired receiving trade. The information written into the IC card carried together with the received article is read by the reader/writer on the side of the receiving trade.