Judgment of the Court (Sixth Chamber) of 5 September 2019.#TDK-Lambda Germany GmbH v Hauptzollamt Lörrach.#Request for a preliminary ruling from the Finanzgericht Baden-Württemberg.#Reference for a preliminary ruling — Regulation (EEC) No 2658/87 — Customs Union and Common Customs Tariff — Tariff classification — Combined Nomenclature — Subheading 8504 40 30 — Static converters — Classification criteria