Truong Trung Hoc Co So Xa Tan Doan Address: Khon Ngoa Hamlet, Tan Doan Commune, Van Quan District, Lang Son Province Enterprise code: 4900263739 Phone: 0205732284 Representative: Ngan Van Chan Tan Doan Commune, Van Quan District, Lang Son ProvinceFounding date: 25 - 12 - 2007