The emergence of the concept of "complex products and systems" began from the literature of military systems, the complexities of the system, the school of large technical system, project management and industrial organization studies. Complex products which are technically manufactured by advanced companies, are technologically advanced capital goods; and investment for capacity building in production sector is one of the important landmarks of national economic power. In the area of complex products, industry structure is mainly composed of very small number of very large firms, suppliers, manufactures, and customers. These firms involve in the process of design, research and development, systems integration, further improvements of the product and maintenance. Now, economic developments require commercialization and development of complex technologies in which the innovation happens only through a complex network. So, one of the distinguishing features of these products compared with the simple ones in mass production is the difference in the related mechanism and innovation management.