Dau Tu Khoang San Viet Bac Joint Stock Company Address: No 11/83, Dao Tan Street, Ngoc Khanh Ward, Ba Dinh District, Ha Noi City Enterprise code: 0102961179 Phone: 02422135868 Representative: Tran Anh Dung Ngoc Khanh Ward, Ba Dinh District, Ha Noi CityFounding date: 8 - 10 - 2008