Dau Tu Tan Thanh An Joint Stock Company Address: Zoom 2.1 Nha A4, QTTL Village, Dich Vong Ward, Cau Giay District, Ha Noi City Enterprise code: 0101277791 Phone: 0247912646 Representative: Cao Thi Phuong Adress: No 17, 800a Street, Nghia Do Ward, Cau Giay District, Ha Noi City Dich Vong Ward, Cau Giay District, Ha Noi CityFounding date: 10 - 9 - 2002