Doan Ket Lang Son LTD Address: Nga Ba Po Ha, Phu Xa Commune, Cao Loc District, Lang Son Province Enterprise code: 4900791520 Phone: 0912125811 Representative: Hoang Anh Duong Adress: No 184, Ngo Quyen Street, Dong Kinh Ward, Lang Son City, Lang Son Province Phu Xa Commune, Cao Loc District, Lang Son ProvinceFounding date: 22 - 3 - 2016