Vat Tu Ky Thuat Hoang Ngan LTD Address: No 32, Khuong Dinh Street, Khuong Dinh Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0101525229 Phone: 0904133046 Representative: Hoang Thi Minh Thao Adress: No 10B La Van Cau, Phuc Tan Ward, Hoan Kiem District, Ha Noi City Khuong Dinh Ward, Thanh Xuan District, Ha Noi CityFounding date: 4 - 9 - 2004