The development of additive manufacturing technology and consideration for its application has widely been promoted as a method capable of manufacturing parts with complicated shapes in a short period of time. Various types of additive manufacturing equipment has been developed and sold, but in order to satisfy requirements for quality, cost and manufacturing period, and to receive the benefits of its application, it is necessary even for the equipment user to develop a wide range of technologies. Mitsubishi Heavy Industries, Ltd. has also been developing various technologies such as powder management technology, optimum support design technology, the optimization of manufacturing conditions, quality monitoring, inner surface polishing technology, etc., and promoting the application of additive manufacturing technologies to our products.