The 3rd Military District of Vietnam People's Army, is directly under the Ministry of Defense of Vietnam, tasked to organize, build, manage and commander armed forces defending the Red River Delta. The north-West region of Vietnam, borders with the Guangxi of China. In 1979, Chinese army with one infantry division, launched an invasion in this military zone.
319th Construction Company (in Long Biên of Hà Nội)- created on March 7, 1979 as the 319th Defence Economics Division. Present there are 3475 technic workers, 763 technic and manage cadre, of which 573 persons with bachelor degree.