This book focuses on how to increase operational efficiency and lower total cost through improving the whole process of procurement and supply chain. The book represents new research on process reengineering. It focuses on how to increase operational efficiency and lower total cost through improving the whole process of procurement and supply chain. This book provides a complete set of system theory and policy approaches for reforming management systems, transforming operational mechanisms, reengineering business processes and controlling supply risks. The purpose is to help purchasing managers at all levels to solve the thorny issues of how to prevent power rent seeking, how to achieve open and fair justice and how to handle the relationship of quality and delivery.