Cty Lien Doanh Xay Dung Phat Trien Ha Tang Viet Hoa Address: No 108 Khu Day Thep, Dong Dang Town, Cao Loc District, Lang Son Province Enterprise code: 4900224842 Phone: 0205851429 Representative: Nguyen Thanh Hien Adress: B11/34a Tran Phu, Ba Dinh District, Ha Noi City Dong Dang Town, Cao Loc District, Lang Son ProvinceFounding date: 28 - 11 - 2003