Hop Tac Xa Thong Nhat Address: Khu Thong Nhat, Dong Mo Town, Chi Lang District, Lang Son Province Enterprise code: 4900142854 Phone: 0205821035 Representative: Nguyen Duc Bay Adress: Khu Thong Nhat, Dong Mo Town, Chi Lang District, Lang Son Province Dong Mo Town, Chi Lang District, Lang Son ProvinceFounding date: 23 - 2 - 1999