Dau Tu Khai Thac Khoang San Thien Son LTD Address: No 22, Lane 497, Tri Hamlet, Phuc Son Commune, Ha Noi Town, Viet Nam, Ha Noi City Enterprise code: 0111644320 Phone: 0333363345 Representative: Nguyen Van Nam Phuc Son Commune, Hai Ba Trung District, Ha Noi CityFounding date: 29 - 9 - 2026