Case C-582/18 P: Judgment of the Court (Seventh Chamber) of 19 December 2019 — Viscas Corp. v European Commission and Furukawa Electric Co. Ltd (Appeal — Competition — Agreements, decisions and concerted practices — European market for underground and submarine power cables — Market allocation in connection with projects — Fines — 2006 Guidelines on the method of setting fines — Determining the relative weight of the European and non-European members in the cartel — Participation of European undertakings in the cartel at several levels — Principle of equal treatment)