Phat Trien Thuong Mai Va Ky Thuat Hoan Thien Joint Stock Company Address: No 9 To Vinh Dien, Khuong Trung Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0101640912 Phone: 0245656657; 0245656661 Representative: Do Minh Hien Adress: Cau Hamlet, Thanh Liet Commune, Thanh Tri District, Ha Noi City Khuong Trung Ward, Thanh Xuan District, Ha Noi CityFounding date: 22 - 4 - 2005