Truong Trung Hoc Co So Xa Tran Yen Address: Tac Nang Hamlet, Tran Yen Commune, Bac Son District, Lang Son Province Enterprise code: 4900363797 Phone: 02053739045 Adress: Bac Son District, Lang Son Province Tran Yen Commune, Bac Son District, Lang Son ProvinceFounding date: 7 - 8 - 2009