Quang Cao Truyen Thong Redstar LTD Address: 2nd Floor, Kim Anh Building, No 1, Lane 78, Duy Tan Street, Cau Giay Ward, Cau Giay District, Ha Noi City Enterprise code: 0111402018 Phone: 0911803674 Representative: Nguyen Ngoc Trang Cau Giay District, Ha Noi CityFounding date: 6 - 3 - 2026