CN Cong Ty TNHH Thuong Mai - Dich Vu Vien Thong Dong Nam Address: 21 Tran Hung Dao, Phan Chu Trinh Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0301449945-004 Phone: 0249331511; 0249332124 Phan Chu Trinh Ward, Hoan Kiem District, Ha Noi CityFounding date: 23 - 12 - 2002