Tu Thanh Address: Civil Group 4, Khu 1, Cao Xanh Ward, Ha Long City, Quang Ninh Province Enterprise code: 5700603429 Phone: 02033826341 Representative: Tran Xuan Dau Adress: 4 Khu 1 Civil Group, Cao Xanh Ward, Ha Long City, Quang Ninh Province Cao Xanh Ward, Ha Long City, Quang Ninh ProvinceFounding date: 10 - 8 - 2006