Book excerpt: This book creatively puts forward the subject nature, object, system, theory, method and application of technical economics, and brings together the research achievements of 50 years, especially the latest research results. It is of great significance for the development of China's technical and economic disciplines and the cultivation of special talents for technical and economic development. It is of great significance for the solution of major technical and economic problems in economic and social development, and has a landmark significance in the history of world technical economics. The book can be used as teaching material for both the liberal arts, science and engineering students within higher education institutions, and as a leading cadre training source for engineers. Furthermore, it can facilitate readers engaged in policy making, program planning, macro control, evaluation of investment decision, feasibility studies, project with aspects such as government, consulting companies, banks, and financial personnel needs. Also this book can aid readers with engineering design, product development, business management, as well as with the needs of engineering and technical personnel and enterprise management personnel.