Trung Tam Vien Thong 5 Address: Vinh Lim Civil Group, Vinh Loc Town, Chiem Hoa District, Tuyen Quang Province Enterprise code: 5000584812 Phone: 02073851297 Vinh Loc Town, Chiem Hoa District, Tuyen Quang ProvinceFounding date: 23 - 2 - 2010