Hop Tac Xa Thach Den Thanh Tam Address: Na Slang Hamlet, Dai Dong Commune, Trang Dinh District, Lang Son Province Enterprise code: 4900895470 Phone: 0981151988 Representative: Nguyen Thi Ha Dai Dong Commune, Trang Dinh District, Lang Son ProvinceFounding date: 13 - 7 - 2023