Dau Tu Va Ky Thuat Dong Bac Joint Stock Company Address: No 10, Alley 105/1, Nguyen Cong Hoan Street, Ngoc Khanh Ward, Ba Dinh District, Ha Noi City Enterprise code: 0103906861 Phone: 02437480218 Representative: Nguyen Hop Ha Ngoc Khanh Ward, Ba Dinh District, Ha Noi CityFounding date: 2 - 6 - 2009