Kien Vien Joint Stock Company Address: No 105 K17, Nguyen Hien Street, Bach Khoa Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0102289140 Phone: 0248682504 Representative: Do Quoc Minh Adress: No 145 Can Hamlet, Doi Can Ward, Ba Dinh District, Ha Noi City Bach Khoa Ward, Hai Ba Trung District, Ha Noi CityFounding date: 15 - 6 - 2007