美国的自由贸易区通常是指设在入境海关口岸或其附近地区、在法律上处于美国关境外的特殊区域。设立自由贸易区的初衷是,通过对货物的免税或免配额进口来促进对外贸易。若货物在该区域内存储或加工后复出口,则无需向美国海关缴纳关税。但是,若货物从自由贸易区进口到美国国内,则进口商需就成品或成品中的外国部件缴纳税款。 The U.S. free trade zone usually refers to a special area located at or near the immigration customs port and legally outside the United States. The original intention of establishing a free trade zone is to promote foreign trade through tax-free or quota-free imports of goods. If the goods are stored or processed in the area and re-exported, there is no need to pay customs duties to the United States Customs. However, if the goods are imported from the free trade zone into the United States, the importer will have to pay taxes on foreign parts in the finished or finished products.