Opinion of Advocate General Kokott delivered on 16 November 2023.#FOD Volksgezondheid, Veiligheid van de voedselketen & Leefmilieu v Triferto Belgium NV.#Request for a preliminary ruling from the rechtbank van eerste aanleg Oost-Vlaanderen Afdeling Gent.#Reference for a preliminary ruling – Registration, evaluation, authorisation and restriction of chemicals – Regulation (EC) No 1907/2006 (REACH Regulation) – Article 2(1)(b) – Scope – Article 3(10) and (11) – Concepts of ‘import’ and ‘importer’ – Article 6 – Obligation to register – Person assuming responsibility for registration – Regulation (EU) No 952/2013 – Union Customs Code – Customs warehousing.#Case C-654/22.