Vat Tu Khoa Hoc Ky Thuat Dau Tu Thuong Mai VHS LTD Address: No 13, Hoa Bang Street, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0101584471 Phone: 0248346795 Representative: To Quang Vinh Adress: No 13, Hoa Bang Street, Yen Hoa Ward, Cau Giay District, Ha Noi City Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 20 - 12 - 2004