Hong Son Tu Joint Stock Company Address: No 19 Nguyen Trai, Khuong Trung Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0106576900 Phone: 0983890398 Representative: Vu Thi Hong Adress: Civil Group 5, Cluster 4, Khuong Dinh Ward, Thanh Xuan District, Ha Noi City Khuong Trung Ward, Thanh Xuan District, Ha Noi CityFounding date: 19 - 6 - 2014