Doi Quan Ly Thi Truong So 4 Address: Ii Quarter, Mau A Town, Van Yen District, Yen Bai Province Enterprise code: 5200447274 Phone: 02163834080 Representative: Chu Minh Tuan Adress: Ii Quarter, Mau A Town, Van Yen District, Yen Bai Province Mau A Town, Van Yen District, Yen Bai ProvinceFounding date: 22 - 7 - 2009