Dau Tu Cong Nghe Vien Thong - Tin Hoc Joint Stock Company Address: No 12, Lane 105/1, Nguyen Cong Hoan Street, Ngoc Khanh Ward, Ba Dinh District, Ha Noi City Enterprise code: 0101449592 Phone: 02437644478 Representative: Tong Thi Sam Ngoc Khanh Ward, Ba Dinh District, Ha Noi CityFounding date: 8 - 3 - 2004