Dau Tu Phat Trien Cong Nghe Chau Au Joint Stock Company Address: No 20, Lane 235, Civil Group 14, Thanh Luong Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0104037036 Phone: 02462933633 Representative: Nguyen Huy Hieu Adress: Le Hamlet, Tan Trieu Commune, Thanh Tri District, Ha Noi City Thanh Luong Ward, Hai Ba Trung District, Ha Noi CityFounding date: 9 - 7 - 2009