Case C-550/14: Judgment of the Court (Second Chamber) of 26 May 2016 (request for a preliminary ruling from the Østre Landsret — Denmark) — Envirotec Denmark ApS v Skatteministeren (Reference for a preliminary ruling — Common system of value added tax — Directive 2006/112/EC — Reverse charge mechanism — Article 198(2) — Gold material or semi-manufactured products — Meaning — Article 199(1)(d) and Annex VI — Used materials, waste and scrap — Ingots resulting from the melting down of various objects and scrap used to enable the extraction of gold and with a purity in gold of 325 thousandths or greater)