53The customs union necessarily implies that the free movement of goods should be ensured between Member States (Case 266/81 SIOT [1983] ECR 731, paragraph 16) and, in more general terms, within the customs union (see Joined Cases C-363/93 and C-407/93 to C-411/93 Lancry and Others [1994] ECR I-3957, paragraph 29).
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