Hop Tac Xa Dich Vu Tong Hop Quynh Son Address: Tan Son Hamlet, Quynh Son Commune, Bac Son District, Lang Son Province Enterprise code: 4900781561 Phone: 0946050322 Representative: Duong Doan Vuong Adress: Tan Son Hamlet, Quynh Son Commune, Bac Son District, Lang Son Province Quynh Son Commune, Bac Son District, Lang Son ProvinceFounding date: 7 - 4 - 2015