Constrexim Dong Do Joint Stock Company Address: 3rd Floor, Nha HH2, Do Thi Moi Yen Hoa, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0102066747 Phone: 0245112328 Representative: Dao Truong Son Adress: 203 C47, Mai Dong Town, Mai Dong Ward, Hoang Mai District, Ha Noi City Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 9 - 11 - 2006