This evidence is the EUR.1, EUR-MED, certificate, or a declaration on the invoice send along with the goods exported. The EUR.1 and EUR-MED certificates are issued by the Customs and Excise Administration.
The EU is progressively rolling out an auto-certification system (REX) which foresees that proof of preferential origin will be issued exclusively by exporters registered in the European Commission’s REX database. Find out more.
Both the preferential import rights for each country of origin (when importing into the EU) and the import duties in the export countries can be found in the European Commission’s Market Access Database.