Hop Tac Xa Dau Tu Xay Dung Thuong Mai Yen Hoa Address: Civil Group 49, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0101632340 Phone: 02438333158 Representative: Nguyen Kim Son Adress: 20 Civil Group 34, Yen Hoa Ward, Cau Giay District, Ha Noi City Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 8 - 4 - 2005