Ban Quan Ly Cho Thanh Pho Yen Bai Address: Trran Hung Dao Street, Hong Ha Ward, Yen Bai City, Yen Bai Province Enterprise code: 5200149359 Phone: 0216852015 Adress: Civil Group 16, Yen Thinh Ward, Yen Bai City, Yen Bai Province Hong Ha Ward, Yen Bai City, Yen Bai ProvinceFounding date: 2 - 11 - 1998