Uy Ban Mat Tran To Quoc Huyen Ham Yen (Don Vi Nop Ho) Address: Tan Yen Town, Ham Yen District, Tuyen Quang Province Enterprise code: 5000306237 Phone: 02073843246 Tan Yen Town, Ham Yen District, Tuyen Quang ProvinceFounding date: 7 - 1 - 2009