Xay Dung San Xuat Da Lang Son Joint Stock Company Address: Son Dong Hamlet, Yen Vuong Commune, Huu Lung District, Lang Son Province Enterprise code: 4900882288 Phone: 0987262675 Representative: Bui Thi Thanh Tam Yen Vuong Commune, Huu Lung District, Lang Son ProvinceFounding date: 28 - 10 - 2021