Dau Tu Phat Trien Cong Nghe Va Xay Dung Thang Long LTD Address: 70, Hang Duong Street, Hang Dao Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0101610192 Phone: 0247912465 Representative: Dang Manh Thang Adress: 70, Hang Duong Street, Hang Dao Ward, Hoan Kiem District, Ha Noi City Hang Dao Ward, Hoan Kiem District, Ha Noi CityFounding date: 22 - 2 - 2005