UNITED NATIONS
www.un.org

WORLD CUSTOMS ORGANIZATION
www.wcoomd.org

WORLD TRADE ORGANIZATION
www.wto.org

LATINOAMERICAN INTEGRATION ASsOCIATION
www.aladi.org

ORGANIZATION OF AMERICAN STATES
www.oas.org

FREE TRADE AMERICAS AREA
www.ftaa-alca.org

EUROPEAN UNION 
http://europa.eu.int

EUROPEAN FREE TRADE ASsOCIATION
www.efta.int

MERCOSUR
www.mercosur.com

UNITED STATES CUSTOMS SERVICE
www.customs.ustreas.gov

UNITED STATES TRADE REPRESENTATIVE
www.ustr.gov

NAFTA SECRETARIAT
www.nafta-sec-alena.org

ECONOMY MINISTRY
www.economia.gob.mx

CUSTOMS ADMINISTRATION
www.sat.gob.mx

MEXICAN FOREIGN TRADE BANK
www.bancomext.com