Dau Tu Phat Trien Tin Hoc Duc Tam Joint Stock Company Address: No 6 14B KTT Bo Cong An Civil Group, Ha Dinh Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0102277699 Phone: 0912345072 Representative: Phuong Cong Thang Adress: La Thien Hamlet, Tan Hong Commune, Ba Vi District, Ha Noi City Ha Dinh Ward, Thanh Xuan District, Ha Noi CityFounding date: 4 - 6 - 2007