Recital 1
(1) The customs union has been a cornerstone of the European Union, which is one of the largest trading blocks in the world. The customs union is fundamental for successful Union integration and for the proper functioning of the internal market, for the benefit of businesses and consumers.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.