Truyen Thong De Nhat Joint Stock Company Address: No 5a, Lane 331, Nguyen Khang Street, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0102264844 Phone: 0242750734 Representative: Dam Thi Hong Nhung Adress: Phu Ma Hamlet, Phu Linh Commune, Soc Son District, Ha Noi City Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 23 - 5 - 2007