The goal of the study was to develop a system that integrates CAD, DFM, and CAPP to improve product development in a concurrent engineering environment. The researchers used techniques like micro cycle design, evaluation index systems, and fuzzy synthetic evaluation to achieve this. The key findings include the successful integration of CAD, DFM, and CAPP through micro cycle design, the implementation of a comprehensive evaluation system for manufacturability, and the use of manufacturing resource modeling to support design processes.