9 Conclusion Kitakyushu has been working in the fi eld of international cooperation for nearly 40 years through partnerships among industries, the local government, academia and the public, based on the intentions of the city’s residents and local enterprises by developing infrastructure inside of the city rooted in the concepts of the “environment”, “Asia” and “monozukuri (technology)”. [...] In Located in the Tsushima Straits to the east in the response to this communiqué, the “Treaty of Peace and East China Sea, the City of Kitakyushu has developed as Friendship Between Japan and the People’s Republic of a trading port with the Asian continent since ancient times China” was concluded in 1978.4 Seizing the normaliazation and was designated as an “international base port” in of diploma. [...] Start of cooperation through the development of and instructors from companies and the academic human resources world in the three sectors of environmental protection, Cooperation in the fi eld of the environment between the productivity improvement, and conservation technologies cities of Kitakyushu and Dalian started with the dispatch were dispatched to the “Kitakyushu-Dalian Technical of three. [...] Cities around Dalian have As a result of the two preliminary fi eld surveys by the water leakage rates of about 40%, with activities shifting Kitakyushu Water and Sewer Bureau which had received to the promotion of the dissemination of technology and the request, it was found out that the development of sustainable in China in the fi nal stages. [...] Benefi cial effects for Kitakyushu collaboration, it is no exaggeration to say that the The continuous acceptance of trainees and visitors acquisition of know-how and the gradual development since the beginning of the 1980s has contributed to the of implementation systems became the cornerstone internationalization of the city and led to improvements for subsequent international environmental coop.