Trung Tam Sach Khuyen Hoc Phia Bac Address: No 3 Hang Tre, Ly Thai To Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0105076221 Phone: 02437450108 Representative: Le Van Be Hai Adress: 36 Nguyen Hau Thanh, Tan Phu District, Ho Chi Minh City Ly Thai To Ward, Hoan Kiem District, Ha Noi CityFounding date: 23 - 12 - 2010