Bk-Bk Group -Tt Telecom LTD Address: Gian Hang So SVP, Sanh B, 1st Floor, Toa Discovery Complex, No 302, Cau Giay Street, Phuong, Cau Giay District, Ha Noi City Enterprise code: 0111623514 Phone: 0942024388 Representative: Pham Van Tu Cau Giay Ward, Cau Giay District, Ha Noi CityFounding date: 7 - 9 - 2026