Quan Uy Hoan Kiem Address: No 21, Ba Trieu Street, Hang Bai Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0110902508 Phone: 02438252067 Representative: Nguyen Quoc Khanh Hang Bai Ward, Hoan Kiem District, Ha Noi CityFounding date: 9 - 6 - 1961