Khai Thac Khoang San Viet Han Group Joint Stock Company Address: Hamlet 2, Que Son Hamlet, Tan Uoc Commune, Thanh Oai District, Ha Noi City Enterprise code: 0108935552 Phone: 02466535502 Representative: Nguyen Van Binh Chu Minh Son Tan Uoc Commune, Thanh Oai District, Ha Noi CityFounding date: 9 - 10 - 2019