Case T-466/17: Judgment of the General Court of 24 September 2019 — Printeos and Others v Commission (Competition — Agreements, decisions and concerted practices — European stock/catalogue and special printed envelopes market — Decision establishing an infringement of Article 101 TFEU — Annulment in part on the ground of infringement of the obligation to state reasons — Amending decision — Settlement procedure — Fines — Basic amount — Exceptional adjustment — 10 % ceiling on the total turnover — Article 23 (2) of Regulation (EC) No 1/2003 — Ne bis in idem principle — Legal certainty — Legitimate expectations — Equal treatment — Cumulation of penalties — Proportionality — Fairness — Unlimited jurisdiction)