Ky Thuat Dich Vu O To Phong Thanh Joint Stock Company Address: 16B, Ngo Tat To Street, Van Mieu Ward, Van Mieu Ward, Dong Da District, Ha Noi City Enterprise code: 0102286238 Phone: 0904276898 Representative: Nguyen Hoai Duong Adress: No 593 La Thanh P.Thanh Cong, Ba Dinh District, Ha Noi City Van Mieu Ward, Dong Da District, Ha Noi CityFounding date: 12 - 6 - 2007