Tram Khuyen Nong Huyen Ham Yen (Don Vi Nop Ho) Address: Tan Yen Town, Ham Yen District, Tuyen Quang Province Enterprise code: 5000306251 Phone: 02073841024 Tan Yen Town, Ham Yen District, Tuyen Quang ProvinceFounding date: 7 - 1 - 2009