Dau Tu Va Dich Vu Bac Ha Joint Stock Company Address: No 44, Lane 26, Nguyen Hong Street, Lang Ha Ward, Dong Da District, Ha Noi City Enterprise code: 0101798988 Phone: 0913342050 Representative: Nguyen Xuan Hai Adress: No 407 Nha A6, Giap Luc Town, Tan Mai Ward, Hoang Mai District, Ha Noi City Lang Ha Ward, Dong Da District, Ha Noi CityFounding date: 20 - 10 - 2005