Dau Tu Thuong Mai Va Xay Dung Ngoc Ha Joint Stock Company Address: Hamlet 8, Sum Hamlet, Lien Son Commune, Lien Son Commune, Luong Son District, Hoa Binh Province Enterprise code: 5400343434 Phone: 02433710469 Representative: Nguyen Doan Hiep Adress: Sum Hamlet, Lien Son Commune, Luong Son District, Hoa Binh Province Lien Son Commune, Luong Son District, Hoa Binh ProvinceFounding date: 16 - 3 - 2010