Thuong Mai Va Xay Dung 531 Joint Stock Company Address: 12B Hamlet, Thuan Ton Hamlet, Da Ton Commune, Gia Lam District, Ha Noi City Enterprise code: 0101646833 Phone: 0248741790; 0915036564 Representative: Dao Hoang Duc Adress: 12B Hamlet, Thuan Ton Hamlet, Da Ton Commune, Gia Lam District, Ha Noi City Da Ton Commune, Gia Lam District, Ha Noi CityFounding date: 6 - 5 - 2005