Chi Nhanh Cong Ty Co Phan Khai Thac Da Dong Phong Tai Van Quan Address: Tan An Street, Van Quan Town, Van Quan District, Lang Son Province Enterprise code: 4900246123-001 Phone: 0913396226 Representative: Do Thi Thanh Mai Adress: No 90B, Phai Ve Street, Dong Kinh Ward, Lang Son City, Lang Son Province Van Quan Town, Van Quan District, Lang Son ProvinceFounding date: 5 - 4 - 2016