Ho Tro Phat Trien Giao Duc & Xay Dung Thang Loi LTD Address: 68 Mai Hac De, Bui Thi Xuan Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101326061 Phone: 0249784980 Bui Thi Xuan Ward, Hai Ba Trung District, Ha Noi CityFounding date: 20 - 1 - 2003