Dau Tu Va Xay Dung Tan Vien Son LTD Address: No 159, Nguyen Ngoc Nai Street, Civil Group 18, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0102667321 Phone: 02438532234 Representative: Tran Thi Toi Adress: No 159, Nguyen Ngoc Nai Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 7 - 3 - 2008