In the opening decision, the Commission expressed doubts as to whether the relevant geographic market for heavy naphtha should be considered as being EEA-wide, regional (Iberian Peninsula) or national.
I beslutningen om at indlede undersøgelsesproceduren var Kommissionen i tvivl om, hvorvidt det relevante geografiske marked for svær naphtha skulle defineres som EØS-markedet, det regionale marked (Den Iberiske Halvø) eller det nationale marked.