Thuong Mai Va Dich Vu Tin Hoc Viet Nam Joint Stock Company Address: O 10, Lot 13 To 78, Hoang Van Thu Ward, Hoang Mai District, Ha Noi City Enterprise code: 0105785348 Phone: 02439916005 Representative: Tran Khanh Hoang Hoang Van Thu Ward, Hoang Mai District, Ha Noi CityFounding date: 9 - 2 - 2012