Doanh Nghiep TN Hoang Ha Address: Khu 1, Tram Tau Town, Tram Tau District, Yen Bai Province Enterprise code: 5200259778 Phone: 02163870536 Representative: Pham Van Ha Adress: Civil Group 25, Tan An Ward, Nghia Lo Town, Yen Bai Province Tram Tau Town, Tram Tau District, Yen Bai ProvinceFounding date: 13 - 6 - 2006