Thuong Mai - Tin Hoc Hoang An LTD Address: 178 Ho Tung Mau, Mai Dich Ward, Cau Giay District, Ha Noi City Enterprise code: 0101309203 Phone: 0904130950 Mai Dich Ward, Cau Giay District, Ha Noi CityFounding date: 3 - 12 - 2002