Khong Gian Xanh Calla Viet Nam Joint Stock Company Address: No 231, Vong Street, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Enterprise code: 0107522337 Phone: 02462915591 Representative: Vu Dinh Khai Adress: No 231, Vong Street, Dong Tam Ward, Hai Ba Trung District, Ha Noi City Dong Tam Ward, Hai Ba Trung District, Ha Noi CityFounding date: 28 - 7 - 2016