Dich Vu Vien Thong Hiep Thanh Joint Stock Company Address: No 75, Hoang Mai Street, Hoang Van Thu Ward, Hoang Mai District, Ha Noi City Enterprise code: 0106459562 Phone: 02466586586 Representative: Than Van Duy Adress: Chua Hamlet, Dan Hoi Commune, Luc Nam District, Bac Giang Province Hoang Van Thu Ward, Hoang Mai District, Ha Noi CityFounding date: 20 - 2 - 2014