Truong THPT Doan Ket- Hai Ba Trung Address: 174 Hong Mai, Quynh Loi Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0104239064 Phone: 02438636338 Quynh Loi Ward, Hai Ba Trung District, Ha Noi CityFounding date: 6 - 11 - 2009