Hassler Viet Nam Joint Stock Company Address: No 227 Nguyen Khang, Yen Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0105497572 Phone: 02437822338 Representative: Nguyen Thanh Hien Adress: Civil Group 59, Khue Trung Ward, Cam Le District, Da Nang City Yen Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 12 - 9 - 2011