Xay Dung Va Thuong Mai Tan Son LTD Address: No 281 To Hieu, Dich Vong Ward, Cau Giay District, Ha Noi City Enterprise code: 0101352939 Phone: 0247564955 Dich Vong Ward, Cau Giay District, Ha Noi CityFounding date: 22 - 4 - 2003