Case C-941/19: Judgment of the Court (Ninth Chamber) of 10 March 2021 (request for a preliminary ruling from the Krajský soud v Ostravě — Czech Republic) — Samohýl group a.s. v Generální ředitelství cel (Reference for a preliminary ruling — Common Customs Tariff — Tariff classification — Combined Nomenclature — Tariff headings 3004 and 3808 — Interpretation — Regulation (EC) No 455/2007 — Spot-on solution for cats against infestations of fleas and ticks — Therapeutic or prophylactic effects)