Sister Ports

Port of Oakland ( Sister Port, U.S.A ) / Concluded 2 May 1980
Port of Vancouver ( Sister Port, Canada ) / Concluded 15 May 1981
Port of Shanghai (จีน Friendship Port, ) / Concluded 12 October 1983
Port of Dalian (จีน Friendship Port, ) / Concluded 5 เดือนกันยายน 1990
Port of Hamburg (ประเทศเยอรมนี Sister Port, ) / Concluded 27 October 1992
Port of Melbourne(Trade Cooperation Port, Australia ) / Concluded 24 May 1986