Dau Tu Xay Dung Vien Thong Trang Long Joint Stock Company Address: No 52B, Civil Group 46, Quan Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0103541762 Phone: 02438337552 Representative: Pham Tuan Long Adress: No 52B, Civil Group 46, Quan Hoa Ward, Cau Giay District, Ha Noi City Quan Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 12 - 3 - 2009