Ub Mat Tran To Quoc Viet Nam Huyen Van Yen Address: Mau A Town, Van Yen District, Yen Bai Province Enterprise code: 5200409335 Phone: 02163834107 Representative: Nguyen Xuan Truong Mau A Town, Van Yen District, Yen Bai ProvinceFounding date: 12 - 6 - 2009