Tu Van Ky Thuat Nhuan Sam LTD Address: P509, 29, 189 Hoang Hoa Tham Lane, Ngoc Ha Ward, Ha Noi Town, Viet Nam, Ha Noi City Enterprise code: 0111571506 Phone: 0865650505 Representative: Trinh My Ha Ngoc Ha Ward, Cau Giay District, Ha Noi CityFounding date: 15 - 7 - 2026