Xay Dung Ha Tang Bac Son Joint Stock Company Address: No 95, Tieu Khu Tran Phu, Bac Son Town, Bac Son District, Lang Son Province Enterprise code: 4900784298 Phone: 02277326677 Representative: Nguyen Xuan Thanh Adress: No 95, Tieu Khu Tran Phu, Bac Son Town, Bac Son District, Lang Son Province Bac Son Town, Bac Son District, Lang Son ProvinceFounding date: 4 - 9 - 2015