Quan Ly & Khai Thac Toa Nha Viet H.A.T Joint Stock Company Address: No 3B, Tong Duy Tan, Hang Bong Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0108099001 Phone: 0908660101 Representative: Tran Thi Ha Hang Bong Ward, Hoan Kiem District, Ha Noi CityFounding date: 18 - 12 - 2017