Case C-559/18: Judgment of the Court (Sixth Chamber) of 5 September 2019 (request for a preliminary ruling from the Finanzgericht Baden-Württemberg — Germany) — TDK-Lambda Germany GmbH v Hauptzollamt Lörrach (Reference for a preliminary ruling – Regulation (EEC) No 2658/87 – Customs Union and Common Customs Tariff – Tariff classification – Combined Nomenclature – Subheading 85044030 – Static converters – Classification criteria – Main intended use)