Cong Nghe Vien Thong- Tin Hoc Joint Stock Company Address: 9th Floor, TTC Building, Duy Tan Street, Dich Vong Hau Ward, Cau Giay District, Ha Noi City Enterprise code: 0101331671 Phone: 02437721816 Representative: Le Hong Son Adress: No 15a Hang Cot, Hang Ma Ward, Hoan Kiem District, Ha Noi City Dich Vong Hau Ward, Cau Giay District, Ha Noi CityFounding date: 12 - 2 - 2003