Lang Son’s nickname “the province of border gates” shows the importance of cross-border trade in the northeastern locality. With the operation of Dong Dang - Lang Son Border Gate Economic Zone, cross-border trade between Vietnam and China and local socio-economy have improved.

Huu Nghi border gate is among the driving forces of Dong Dang - Lang Son Border Gate Economic Zone. With a relatively large area of more than 26 hectares, a dedicated route for cargo transport and a modern building for handling relevant procedures, the increasingly high demand of people and enterprises for import-export and immigration entry and exit has been met. Stretching on an area of nearly 400 sqm, Dong Dang – Lang Son Border Gate Economic Zone covers two international and three auxiliary border gates. Many projects are underway to better facilitate border trade and exchanges, including dedicated routes for import-export activities.