Case C-169/17: Judgment of the Court (First Chamber) of 14 June 2018 (request for a preliminary ruling from the Tribunal Supremo — Spain) — Asociación Nacional de Productores de Ganado Porcino v Administración del Estado (Reference for a preliminary ruling — Articles 34 and 35 TFEU — Free movement of goods — Quantitative restrictions — Measures having equivalent effect — Protection of pigs — Products processed or marketed in Spain — Quality standards for meat, ham, shoulder ham and loin derived from Iberian pigs — Conditions for using the ‘de cebo’ designation — Improvement of the quality of products — Directive 2008/120/EC — Scope)