Vien Thong Hoang Dai Duong LTD Address: Phe Hamlet, Van Son Commune, Son Dong District, Bac Giang Province Enterprise code: 2400818805 Phone: 0983726929 Representative: Hoang Van Hien Van Son Commune, Son Dong District, Bac Giang ProvinceFounding date: 18 - 7 - 2017