Tu Van Xay Dung Va Phat Trien Cong Nghe Cao Joint Stock Company Address: No 3 Civil Group 31, Lang Thuong Ward, Dong Da District, Ha Noi City Enterprise code: 0101619519 Phone: 0914337729 Representative: Nguyen Trong Bang Adress: No 31, Hamlet 22, Y La Commune, Tuyen Quang City, Tuyen Quang Province Lang Thuong Ward, Dong Da District, Ha Noi CityFounding date: 17 - 3 - 2005