Dau Tu Viet Thanh An Joint Stock Company Address: No 7, Kim Ma Street, Kim Ma Ward, Ba Dinh District, Ha Noi City Enterprise code: 0105483643 Phone: 02437331188 Representative: Nguyen Ha Thang Adress: Zoom 10, Nha I, Tap The Quan Doi, Lang Ha Ward, Dong Da District, Ha Noi City Kim Ma Ward, Ba Dinh District, Ha Noi CityFounding date: 6 - 9 - 2011