Phong Nha Joint Stock Company Address: No 6 Hem 81/30/8 Lac Long Quan, Nghia Do Ward, Cau Giay District, Ha Noi City Enterprise code: 0103696999 Phone: 02437914867 Representative: Nguyen Trong Adress: No 6 Hem 81/30/8 Lac Long Quan P.Nghia Do, Cau Giay District, Ha Noi City Nghia Do Ward, Cau Giay District, Ha Noi CityFounding date: 15 - 4 - 2009