Case T-746/20: Judgment of the General Court of 21 December 2022 — Grünig v Commission (Dumping — Imports of certain polyvinyl alcohols originating in China — Definitive anti-dumping duties — Exemption of imports for a particular end-use — Action for annulment — Severability — Regulatory act entailing implementing measures — Direct concern — Actionable measure — Admissibility — First subparagraph of Article 9(5) of Regulation (EU) 2016/1036 — Duty imposed on a non-discriminatory basis — Equal treatment)