Vien Hoa Hoc - Vat Lieu Address: No 17 Hoang Sam, Nghia Do Ward, Cau Giay District, Ha Noi City Enterprise code: 0100837592 Phone: 0247564987 Representative: Ngo Hoang Giang Adress: 31, 1 Kham Thien Lane, Dong Da District, Ha Noi City Nghia Do Ward, Cau Giay District, Ha Noi CityFounding date: 16 - 3 - 1999