as of October 2019 , it is also the second largest free-trade zone in mainland China in terms of land area (behind Hainan Free Trade Zone, which covers the whole Hainan province ) by covering an area of 240 sqkm and integrating four existing bonded zones—Waigaoqiao Free Trade Zone, Waigaoqiao Free Trade Logistics Park, Yangshan Free Trade Port Area, and Pudong Airport Comprehensive Free Trade Zone.