The Development Authority begins tonight with a presentation by Leigh Ryan, Director of Trade Services and Foreign Trade Zone 104, World Trade Center Savannah. According to WTC Savannah,
A foreign trade zone is a federally approved location within the United States, which is considered outside of US Customs territory where domestic and foreign merchandise may be placed without formal customs entry and without payment of duties and taxes. Subzones are special-purpose facilities for companies unable to operate effectively at public zone sites. Foreign trade zones are usually located in or near Customs ports of entry, at industrial parks or terminal warehouse facilities. Their purpose is to attract and promote international trade and commerce.
WTC has more on that page, but never actually says where FTZ 104 is.
Mary Carr Mayle, SavannaNow, 31 May 2015, World Trade Center Savannah expands FTZ 104, Continue reading