Cong Nghe Vien Thong Tin Hoc Dai Duong LTD Address: 8/ A24, Nghia Tan Ward, Cau Giay District, Ha Noi City Enterprise code: 0101165449 Phone: 0248361113 Representative: Duong Quang Sau Adress: 8/ A24, Nghia Tan Ward, Cau Giay District, Ha Noi City Nghia Tan Ward, Cau Giay District, Ha Noi CityFounding date: 3 - 10 - 2001