Davao City and Nanning City of China has signed a sisterhood agreement for economic and cultural exchange on September 3, 2007. Nanning is the designated gateway city of China to the ASEAN or the Association of Southeast Asian Nations.
Nanning City of China
Davao, on the other hand, is the de facto capital of the East ASEAN Growth Area (EAGA) in the Brunei-Indonesia-Malaysia-Philippines (BIMP) sub-region.
Mayor Rodrigo Duterte, in an interview, said investments are expected to pour in as a result of the sisterhood pact.Other international sister cities of Davao include Keelung in Taiwan, Bitung in Indonesia, Manado in Indonesia, Tacoma in USA, and Koror in the Republic of Palau.