Hong Son Address: Dam Hong, Ngoc Hoi Commune, Chiem Hoa District, Tuyen Quang Province Enterprise code: 5000219633 Phone: 0207853225 Representative: Ngo Van Hung Adress: Dam Hong, Ngoc Hoi Commune, Chiem Hoa District, Tuyen Quang Province Founding date: 24 - 10 - 2002