Vien Thong Cao LTD Address: No 14, Lane 410, Bach Dang Street, Chuong Duong Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0102686814 Phone: 0904320212 Representative: Cao Van Hieu Adress: Dang Hamlet, Dang Xa Commune, Gia Lam District, Ha Noi City Chuong Duong Ward, Hoan Kiem District, Ha Noi CityFounding date: 21 - 3 - 2008