Case T-326/21: Judgment of the General Court of 21 June 2023 — Guangdong Haomei New Materials and Guangdong King Metal Light Alloy Technology v Commission (Dumping — Import of aluminium extrusions originating in China — Implementing Regulation (EU) 2021/546 — Imposition of a definitive anti-dumping duty — Article 1(4) of Regulation (EU) 2016/1036 — Definition of the product concerned — Determination of the normal value — Article 2(6a) of Regulation 2016/1036 — Report establishing significant distortions in the exporting country — Burden of proof — Reference to a representative country — Article 3(1), (2), (3), (5) and (6) of Regulation 2016/1036 — Injury — Economic factors and incices having a bearing on the state of the Union industry — Rights of the defence — Principle of good administration)