Duong Son Lan Joint Stock Company Address: No 56C Hoang Cau, O Cho Dua Ward, Dong Da District, Ha Noi City Enterprise code: 0101431387 Phone: 02435130668 Representative: Dam Kieu Duong Adress: A5 - 01 - A2 Khuong Thuong, Trung Tu Ward, Dong Da District, Ha Noi City O Cho Dua Ward, Dong Da District, Ha Noi CityFounding date: 31 - 12 - 2003