Case C-617/24, Siegfried PharmaChemikalien: Judgment of the Court (Seventh Chamber) of 20 November 2025 (request for a preliminary ruling from the Finanzgericht Düsseldorf – Germany) – Siegfried PharmaChemikalien Minden GmbH v Hauptzollamt Bielefeld (Reference for a preliminary ruling – Customs union – Regulation (EU) No 952/2013 – Union Customs Code – Article 24(d) and Article 211(2) – Delegation of power to the European Commission – Power to supplement a legislative act – Delegated Regulation (EU) 2015/2446 – Article 172(1) and (2) – Validity – Retroactive effect of an inward processing authorisation)