Gangdiguo Special Economic Zone
The Gangdiguo Special Economic Zone is an economic zone within the Jingdaoese Empire through which trade is handled with Jingdao's allies. It's administrative capital is Gangdiguo. As the Empire has access to most of the necessary resources, its trade with the rest of the world had always been limited. With the establishment of the Common Market, and later its integration in the Port of Vines, those became exclusive partners.
Trade is strictly regulated and monitored to avoid smuggling from illegal and dangerous contraband from non-USSO states.