Hoi Nhac Si Viet Nam Address: 51 Tran Hung Dao, Hang Bai Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0110882026 Phone: 0989126347 Representative: Nguyen Duc Thinh Hang Bai Ward, Hoan Kiem District, Ha Noi CityFounding date: 30 - 12 - 1957