Changgyms Joint Stock Company Address: 235a Thinh Quang, Thinh Quang Ward, Dong Da District, Ha Noi City Enterprise code: 0110357595 Phone: 0244888505 Representative: Tran Huyen Trang Thinh Quang Ward, Dong Da District, Ha Noi CityFounding date: 20 - 5 - 2023