This Paper discusses the possibilities and contributions of establishing 'design-oriented components', which provide flexible design for the A/E, and concludes follows. 1. The production system of component manufacturers has enough flexibility to accept special orders from the A/E since they have changed from production for stock to that for order. 2. There is no reason why the A/E selects ready-made components only for his design, nevertheless the idea of open system has been based on such components manufactured by the production system for stock. 3. It is essential to establish design-oriented components with which their information is represented by a means of operating their attribute easily. Such components are expected to gather A/E's needs for new developments by component manufactures.