But a common external tariff exists for non-eec countries . 但是对非欧共体的国家则实行统一的对外税则。
2.
Common external tariff 共同对外关税
3.
In a customs union , internal tariffs are eliminated and the member countries form a single customs territory with a common external tariff 关税同盟中,其内部关税免除,成员国建立一个对于共同的外来关税的单一的海关边界。