Korea Single Window has been chosen as the best practice by Slovenia and CUPIA and Korea Customs Service were invited to theCustoms Administration of the Republic of Slovenia and SWSi Conference held in Celje Exhibition Center in Slovenia on 10th of March, 2008.In order to promote Slovenia Single Window and discuss about future plans and its needs, CUPIA presented a presentation about UNI-PASS system, introduction of Korea Single Window development and results, Global Single Window promoting plans, success factors, etc.