Tu Van Dau Tu Va Xay Dung Hoan Loc Joint Stock Company Address: No 99, Truong Chinh Street, Quyet Thang Ward, Son La City, Son La Province Enterprise code: 5500450831 Phone: 02382746789 Representative: Nguyen Xuan Thien Adress: Hamlet 5, Van Phu Commune, Yen Bai City, Yen Bai Province Quyet Thang Ward, Son La City, Son La ProvinceFounding date: 29 - 3 - 2012