Dia Tin Hoc Geoecom Joint Stock Company Address: No 134, Nguyen Khoai Street, Thanh Luong Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0102568472 Phone: 0248211597 Representative: Trinh Huu Lien Adress: No 29, Civil Group 20, Thanh Luong Ward, Hai Ba Trung District, Ha Noi City Thanh Luong Ward, Hai Ba Trung District, Ha Noi CityFounding date: 20 - 12 - 2007