Case T-442/12: Judgment of the General Court of 1 June 2017 — Changmao Biochemical Engineering v Council (Dumping — Imports of tartaric acid originating in China — Modification of the definitive anti-dumping duty — Partial interim review — Market economy treatment — Costs of major inputs substantially reflecting market values — Change in circumstances — Obligation to state reasons — Period for adopting a decision on market economy treatment — Rights of the defence — Article 20(2) of Regulation (EC) No 1225/2009)