The Gioi Dau Tu TM Du Lich Address: Khu Day Thep, Dong Dang Town, Cao Loc District, Lang Son Province Enterprise code: 4900237023 Phone: 0205850999 Representative: Yang Hui Lin Adress: Khu Vuon Sai, Dong Dang Town, Cao Loc District, Lang Son Province Dong Dang Town, Cao Loc District, Lang Son ProvinceFounding date: 23 - 11 - 2005