Dau Tu Dai Bac TNKS Joint Stock Company Address: Ao Sen Hamlet, Nam Hoa Commune, Dong Hy District, Thai Nguyen Province Enterprise code: 4600414338 Phone: 02148658668 Representative: Vu Anh Thang Adress: 214, Civil Group 30, Phan Dinh Phung Ward, Thai Nguyen City, Thai Nguyen Province Nam Hoa Commune, Dong Hy District, Thai Nguyen ProvinceFounding date: 28 - 8 - 2007