Van Phong Dai Dien Cong Ty TNHH Oh Vacation Tai Thanh Pho Ha Noi Address: No 52 Chua Ha, Phuong, Cau Giay District, Ha Noi City Enterprise code: 0107321214-005 Phone: 0326427788 Representative: Thieu Vinh Hoa Founding date: 23 - 10 - 2025