Vien Kiem Sat Nhan Dan Huyen Van Yen Address: Khu Ii, Mau A Town, Van Yen District, Yen Bai Province Enterprise code: 5200451425 Phone: 02163834109 Mau A Town, Van Yen District, Yen Bai ProvinceFounding date: 6 - 8 - 2009