Cong Nghe Quang Cao Ha Thanh Joint Stock Company Address: No 129 Lam Du, Bo De Ward, Long Bien District, Ha Noi City Enterprise code: 0101360577 Phone: 0248721562; 0248282849 Representative: Ngo Thi Hoang Yen Adress: No 7, Dien Bien Phu Street, Dien Bien Ward, Ba Dinh District, Ha Noi City Bo De Ward, Long Bien District, Ha Noi CityFounding date: 13 - 5 - 2003