Dau Tu Cong Nghe So Joint Stock Company Address: 2nd Floor So 89 Le Thanh Nghi, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0104236585 Phone: 02436288424 Representative: Dang Thi Thanh Thuy Adress: 29 Van Dau Civil Group, Kien An District, Hai Phong City Dong Tam Ward, Hai Ba Trung District, Ha Noi CityFounding date: 5 - 11 - 2009