Specialized software systems that support product design and development processes in manufacturing. Includes design support tools such as CAD (Computer Aided Design), CAM (Computer Aided Manufacturing), CAE (Computer Aided Engineering), PLM (Product Lifecycle Management), and PDM (Product Data Management). Provides functions including 3D modeling, drawing creation, analysis simulation, design data management, parts library management, and design change history management to achieve efficiency improvement and quality enhancement in product development. Covers industry-specific systems for mechanical design, mold design, electrical design, piping design, etc., and is clearly distinguished from production management systems and control systems in manufacturing sites.