A general purpose ERP system is often unsuitable to manage the products of a small and medium enterprise. Thus, it is necessary to develop and use a system which is suitable for characteristic of an enterprise. In this paper, we implement a raw and subsidiary materials management system which controls the many products of an enterprise producing electrical wire. First, we design a database of raw and subsidiary materials information for production process. Second, we develop an automatic calculation module which computes the necessary quantify of materials to produce goods ordered. Third, the proposed system manages purchasing and selling data of raw and subsidiary materials in production process. Finally, we implement not only a history management module of storage and delivery, but also a print module of history summary report.