Tu Van Xay Dung Va Thuong Mai Bac Thang Long Joint Stock Company Address: Tong Pong 2 Civil Group, Tan An Ward, Nghia Lo Town, Yen Bai Province Enterprise code: 5200477656 Phone: 02163879879 Representative: Hoang Van Chuong Adress: Civil Group 9, Tan An Ward, Nghia Lo Town, Yen Bai Province Tan An Ward, Nghia Lo Town, Yen Bai ProvinceFounding date: 16 - 12 - 2009