Dau Tu Thuong Mai Va San Xuat Dong Son Joint Stock Company Address: No 22 3 Khoi 1a Civil Group, Dong Anh Town, Dong Anh District, Ha Noi City Enterprise code: 0101414261 Phone: 0248837962 Dong Anh Town, Dong Anh District, Ha Noi CityFounding date: 3 - 11 - 2003