O To Linh Son LTD Address: No 21 Tran Khanh Du, Phan Chu Trinh Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0101323374 Phone: 02439351389 Representative: Ngo Nang Nghi Phan Chu Trinh Ward, Hoan Kiem District, Ha Noi CityFounding date: 13 - 1 - 2003