Opal LTD Address: Zoom 305 Nha H3, Thanh Xuan Nam Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0104075151 Phone: 02435574160 Representative: Dinh Quang Hieu Adress: P305 Nha H3, Thanh Xuan Nam Ward, Thanh Xuan District, Ha Noi City Thanh Xuan Nam Ward, Thanh Xuan District, Ha Noi CityFounding date: 29 - 7 - 2009