Dai Duong Telecom Joint Stock Company Address: LK1 - 16 Khu Dat Dau Gia X8, Yen Nghia Ward, Ha Noi City, Viet Nam, Ha Noi City Enterprise code: 0111463099 Phone: 0567676767 Representative: Le Xuan Hai Yen Nghia Ward, Ha Dong District, Ha Noi CityFounding date: 20 - 4 - 2026