Ky Thuat Dai An Joint Stock Company Address: No 46, Lane 33, Tan Ap, Phuc Xa Ward, Ba Dinh District, Ha Noi City Enterprise code: 0101771351 Phone: 02466748541 Representative: Tran Phong Quan Phuc Xa Ward, Ba Dinh District, Ha Noi CityFounding date: 13 - 9 - 2005