Case T-480/20: Judgment of the General Court of 1 March 2023 — Hengshi Egypt Fiberglass Fabrics and Jushi Egypt for Fiberglass Industry v Commission (Subsidies — Imports of certain woven or stitched glass fibre fabrics originating in China and Egypt — Implementing Regulation (EU) 2020/776 — Definitive countervailing duty — Calculation of the subsidy amount — Attributability of the subsidy — Rights of the defence — Manifest error of assessment — Import duty drawback scheme — Tax treatment of foreign exchange losses — Calculation of the undercutting margin)