Ariyana Da Nang Exhibition and Convention Centre Da Nang City, Vietnam November 9, 2017 President Rodrigo Roa Duterte signed the Memory Book in a welcome ceremony accorded to him by Asia-Pacific Economic Cooperation (APEC) CEO Summit Chairman Dr. Vu Tien Loc at the Ariyana Da Nang Exhibition and Convention Centre in Da Nang City, Vietnam. continue reading : Welcome Ceremony by APEC CEO Summit Chairman Dr. Vu Tien Loc