Tokyo's Ota Ward is one of Japan's leading "manufacturing towns" with a high concentration of small factories. Each factory in Ota Ward possesses advanced technology, and through "Nakama-Mawashi", a system in which processing is passed from one factory to another, they have been able to meet the demand for difficult processing and development. However, in recent years, many local factories have been struggling in a difficult environment due to price competition with large factories in other regions and overseas. In order to break out of this situation, the entire manufacturing industry in Ota Ward has joined forces to become a manufacturing partner from the prototype development stage, rather than simply a subcontractor for parts processing! This was the beginning of the "Platto Monozukuri" project. Until now, the "hub companies" consulted by customers would individually call, e-mail, fax, or directly visit the factory to coordinate work with fellow companies specializing in their respective processing. This process was very time-consuming and labor intensive, and was one of the major reasons that prevented them from taking on the challenge of prototype development projects. Digitalization of this process through the use of "Plat Monozukuri" has realized a significant improvement in work efficiency, and a "Modern Digital Nakamawari" system has been established, which allows us to confidently say "leave any kind of manufacturing consultation to us.