Chien Sau Address: Dong Loi Hamlet, Son Duong District, Tuyen Quang Province Enterprise code: 5000275726 Phone: 02073738071 Representative: Vu Doan Thanh (Vu Doan Chien) Adress: Dong Loi Hamlet, Son Duong District, Tuyen Quang Province Son Duong District, Tuyen Quang ProvinceFounding date: 11 - 7 - 2007