Judgment of the Court (Ninth Chamber) of 19 December 2024.#ZCC Europe GmbH v Hauptzollamt Düsseldorf.#Reference for a preliminary ruling – Customs union – Common Customs Tariff – Combined Nomenclature – Tariff classification – Headings 8113 and 8209 – Hard metal sticks made of cermets – Implementing Regulation (EU) 2021/910 – Validity – Classification criteria.#Case C-591/23.