Chi Nhanh I Cong Ty Co Phan Khai Thac Khoang San Thang Long Ha Noi Address: Khu Kim 1, Phuong Son Commune, Luc Ngan District, Bac Giang Province Enterprise code: 0102120634-001 Phone: 02047500401 Representative: Vu Van Thao Adress: Khu Trung, Xuan Dinh Commune, Xuan Dinh Commune, Tu Liem District, Ha Noi City Phuong Son Commune, Luc Ngan District, Bac Giang ProvinceFounding date: 24 - 9 - 2009