Hoang Ha Son LTD Address: Lot B1.16, B1.17, B1.18, Bac Cau Hac Urban Area, Dong Tho Ward, Thanh Hoa City, Thanh Hoa Province Enterprise code: 2800705570 Phone: 0237757705 Representative: Le Quang Dao Adress: Khu 4, Bac Son Ward, Bim Son Town, Thanh Hoa Province Founding date: 19 - 9 - 2002