Ban Quan Ly Du An Dau Tu Va Xay Dung Van Yen Address: Khu Ii, Mau A Town, Van Yen District, Yen Bai Province Enterprise code: 5200447683 Phone: 02163834795 Representative: Le Tien Dung Adress: Khu 4, Mau A Town, Van Yen District, Yen Bai Province Mau A Town, Van Yen District, Yen Bai ProvinceFounding date: 23 - 7 - 2009