Thuong Mai Va Du Lich Hoang Son LTD Address: No 12, 14 Nguyen Quang Bich, Cua Dong Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0103014251 Phone: 02439232525 Representative: Bui Thi Thu Ha Adress: No 10, Dao Duy Tu Lane, Hang Buom Ward, Hoan Kiem District, Ha Noi City Cua Dong Ward, Hoan Kiem District, Ha Noi CityFounding date: 17 - 11 - 2008