Truong Mam Non Xa Hoi Hoan Address: Kia Hamlet, Na Sam Town, Van Lang District, Lang Son Province Enterprise code: 4900889766 Phone: 0979940565 Representative: Hoang Thi Tu Adress: Keo Phau, Hoang Viet Commune, Van Lang District, Lang Son Province Na Sam Town, Van Lang District, Lang Son ProvinceFounding date: 22 - 9 - 2022