Trainbiz Joint Stock Company Address: 7th Floor, Charmvit Building, No 117 Tran Duy Hung, Yen Hoa Ward, Ha Noi City, Viet Nam, Ha Noi City Enterprise code: 0111214423 Phone: 0355485083 Representative: Dinh Thi Tuoi Ha Noi CityFounding date: 12 - 9 - 2025