Hoan La Address: Hong Phong Hamlet, Mau A Town, Van Yen District, Yen Bai Province Enterprise code: 5200796229 Phone: 0973377976 Representative: Vu Thi La Adress: Hong Phong Hamlet, Mau A Town, Van Yen District, Yen Bai Province Mau A Town, Van Yen District, Yen Bai ProvinceFounding date: 6 - 5 - 2013