O To Huy Hoang Joint Stock Company Address: No 479, Tam Trinh Street, Hoang Van Thu Ward, Hoang Mai District, Ha Noi City Enterprise code: 0104098261 Phone: 02436342960 Representative: Vu Van Tuy Adress: No 1/360, Bach Dang Street, Chuong Duong Ward, Hoan Kiem District, Ha Noi City Hoang Van Thu Ward, Hoang Mai District, Ha Noi CityFounding date: 12 - 8 - 2009