Xay Dung Va Thuong Mai Hoang Son Joint Stock Company Address: No 59, Thanh Nien Street, Civil Group 50, Hong Ha Ward, Yen Bai City, Yen Bai Province Enterprise code: 5200295825 Phone: 02163818360 Representative: Nguyen Van Oanh Adress: Civil Group 50, Hong Ha Ward, Yen Bai City, Yen Bai Province Hong Ha Ward, Yen Bai City, Yen Bai ProvinceFounding date: 29 - 9 - 2008