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.
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.