Special restricted-access commercial and industrial areas in or near ports of entry that are designated by the government for duty-free entry of any non-prohibited goods. Foreign and domestic merchandise, including raw materials, components, and finished goods may be stored, displayed, and used for manufacturing within the zone and re-exported without duties being paid. Duties are imposed only when the original goods or items manufactured from those goods pass from the zone into an area of the country subject to Customs authority.