Truong Mam Non Yen Vuong Address: Goc Sau Hamlet, Yen Vuong Commune, Huu Lung District, Lang Son Province Enterprise code: 4900396506 Phone: 0238295736 Adress: Huu Lung District, Lang Son Province Yen Vuong Commune, Huu Lung District, Lang Son ProvinceFounding date: 25 - 9 - 2009