Khoang San Quan Son LTD Address: Nha Ba Pham Thi Ngam, Khu 4, Quan Son Town, Quan Son District, Thanh Hoa Province Enterprise code: 2801827571 Phone: 0917352352 Representative: Pham Ba Duong Adress: Yen Nguu Hamlet, Tam Hiep Commune, Thanh Tri District, Ha Noi City Quan Son Town, Quan Son District, Thanh Hoa ProvinceFounding date: 26 - 3 - 2012