San Xuat, Dich Vu & Thuong Mai Ha Noi - O Sa Ka Joint Stock Company Address: No 153 Mai Hac De, Le Dai Hanh Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0101371201 Phone: 0249742089 Representative: Nguyen Vinh Hoa Adress: 198 Tran Quang Khai, Hai Ba Trung District, Ha Noi City Le Dai Hanh Ward, Hai Ba Trung District, Ha Noi CityFounding date: 6 - 6 - 2003