Tu Van Thiet Ke Xay Dung Va Thuong Mai Duc Long Joint Stock Company Address: No 31, Hang Chuoi Street, Pham Dinh Ho Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101795338 Phone: 0249722269 Representative: Nguyen Ngoc Thanh Adress: No 74, Son Tay Street, Kim Ma Ward, Ba Dinh District, Ha Noi City Pham Dinh Ho Ward, Hai Ba Trung District, Ha Noi CityFounding date: 18 - 10 - 2005