关税同盟在实现商品对内自由流动的同时,对外实行共同贸易政策,实施共同对外关税以及贸易保护措施。欧盟东扩意味着世界上第一大关税同盟的规则自动延伸到10个新成员国,提高了欧盟国际贸易谈判中的声音,同时对非欧盟国家(包括中国)造成了不同程度的影响,甚至引发了对关税同盟补 While realizing the free flow of goods within the customs union, the customs union implements common trade policies with the outside world and implements common external tariffs and trade protection measures. The EU’s eastward expansion signifies that the rule of the world’s largest customs union automatically extends to 10 new member states, raising the voice of the EU in international trade negotiations and at the same time exerting varying degrees of influence on non-EU countries (including China), or even Triggered by the customs union make up