O To Son Duong Joint Stock Company Address: Hau Hamlet, Uy No Commune, Dong Anh District, Ha Noi City Enterprise code: 0105472810 Phone: 02439505152 Representative: Do Son Duong Adress: Hau Hamlet, Uy No Commune, Dong Anh District, Ha Noi City Uy No Commune, Dong Anh District, Ha Noi CityFounding date: 26 - 8 - 2011