Dau Tu Ky Thuat Hai Nguyen Joint Stock Company Address: No 2, Lane 175, Xuan Thuy Street, Dich Vong Hau Ward, Cau Giay District, Ha Noi City Enterprise code: 0101671068 Phone: 0913507405 Representative: Duong Thi Phuong Adress: No 301 De La Thanh, O Cho Dua Ward, Dong Da District, Ha Noi City Dich Vong Hau Ward, Cau Giay District, Ha Noi CityFounding date: 9 - 6 - 2005