Thuong Mai 4tech Joint Stock Company Address: No 333 Bui Xuong Trach, Hoang Mai District, Ha Noi City Enterprise code: 0105000575 Phone: 02466543636 Representative: Nguyen Xuan Thanh Adress: No 18a, 307 Bui Xuong Trach Lane, Hoang Mai District, Ha Noi City Hoang Mai District, Ha Noi CityFounding date: 11 - 11 - 2010