Thuong Mai Dich Vu Vien Thong T.S.T Joint Stock Company Address: No 32, Civil Group 13, Nghia Do Ward, Cau Giay District, Ha Noi City Enterprise code: 0102032882 Phone: 0247533902 Representative: Nguyen Gia Khanh Adress: No 43, Civil Group 13, Nghia Do Ward, Cau Giay District, Ha Noi City Nghia Do Ward, Cau Giay District, Ha Noi CityFounding date: 22 - 9 - 2006