Benh Vien Da Khoa Khu Vuc Yen Hoa Address: Yen Hoa Commune, Na Hang District, Tuyen Quang Province Enterprise code: 5000329361 Phone: 02072214985 Adress: Na Hang District, Tuyen Quang Province Yen Hoa Commune, Na Hang District, Tuyen Quang ProvinceFounding date: 19 - 2 - 2009