Dau Tu Xay Dung Va Phat Trien Nha Thu Do So 31 Joint Stock Company Address: No B06, Nam Trang Street, Phuong, Ba Dinh District, Ha Noi City Enterprise code: 0111508303 Phone: 0986553139 Representative: Nguyen Quang Thang Ba Dinh Ward, Ba Dinh District, Ha Noi CityFounding date: 21 - 5 - 2026