Thuong Mai Va Dich Vu Ky Thuat Hoang Bach Joint Stock Company Address: No 36, Lane 133, Thai Ha Street, Trung Liet Ward, Dong Da District, Ha Noi City Enterprise code: 0101358955 Phone: 0245729467 Trung Liet Ward, Dong Da District, Ha Noi CityFounding date: 9 - 5 - 2003