Tu Van, Khao Sat, Thiet Ke An Thinh Joint Stock Company Address: No 34 Nguyen Huy Tu, Bach Dang Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101454465 Phone: 0249715852 Representative: Nguyen Trong Nga Adress: No 34 Nguyen Huy Tu, Bach Dang Ward, Hai Ba Trung District, Ha Noi City Bach Dang Ward, Hai Ba Trung District, Ha Noi CityFounding date: 19 - 3 - 2004