Ky Thuat Sao Thien Ha LTD Address: No 76, Le Thanh Nghi Street, Bach Khoa Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101381143 Phone: 0248682492 Bach Khoa Ward, Hai Ba Trung District, Ha Noi CityFounding date: 9 - 7 - 2003