Doanh Nghiep TN O To Hoang Son Address: Civil Group 6, Khu 10, Troi Town, Hoanh Bo District, Quang Ninh Province Enterprise code: 5701367654 Phone: 02033690844 Representative: Ta Van Son Adress: Civil Group 6, Khu 10, Troi Town, Hoanh Bo District, Quang Ninh Province Troi Town, Hoanh Bo District, Quang Ninh ProvinceFounding date: 25 - 1 - 2010