Hop Tac Xa Nong Lam Hai Yen Address: Na Ten Hamlet, Hai Yen Commune, Cao Loc District, Lang Son Province Enterprise code: 4900884221 Phone: 02397736982 Representative: Chu Van Khiem Hai Yen Commune, Cao Loc District, Lang Son ProvinceFounding date: 2 - 12 - 2021