Although the promotion of use of reused parts is desired, high quality requested for parts reduces the opportunity of their practical use. We are proposing network agents that acquire both the quality information of products existing in the market and the consumer's demands on product performances. The agents can promote an effective reuse of parts by matching the parts having distributed quality with various consumer demands and by advising consumers to replace their part with the matched part in the market. In this paper, a life cycle simulation of parts with agents show the variety of consumer preferences for use of parts helps the reuse of parts with distributed quality.