Son Duc Address: Nong Luc Hamlet, Hung Vu Commune, Bac Son District, Lang Son Province Enterprise code: 4900249646 Phone: 02053739167 Representative: Tran Thi Nghia Adress: No 402, Ba Trieu Street, Dong Kinh Ward, Lang Son City, Lang Son Province Hung Vu Commune, Bac Son District, Lang Son ProvinceFounding date: 21 - 9 - 2006