Quang Cao Va Truyen Thong Dong A Joint Stock Company Address: No 12, Alley 5, Lane 72, Hoa Bang Street, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0101890983 Phone: 0904595868 Representative: Bui Chi Dung Adress: No 10, Alley 310/43, Nghi Tam Street, Yen Phu Ward, Tay Ho District, Ha Noi City Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 16 - 3 - 2006