There have been major innovations and paradigm shifts in product design methodologies and systems. The current R and D trend is for collaborative design and manufacturing methodologies and systems. These allow designers to participate in global design chains and collaborate with each other and overseas partners to pursue competitive advantages. Designers can work closely with suppliers, manufacturing partners and customers across enterprise firewalls to obtain valuable input. This book introduces a spectrum of collaborative engineering issues in design and manufacturing. It contains state-of-the-art chapters written by experts from academia and industry and reflects the R and D work and applications of the last 3-5 years. A reference for academics, senior undergraduates, graduates and practitioners in collaborative design and manufacturing, concurrent engineering, Internet-based/intelligent design and manufacturing, CAD/PDM/CAPP/CAM, Internet applications, product lifecycle management, supply chain, etc.