Happy Tech LTD Address: No 11 LK20, Van Khe Urban Area, La Khe Ward, Ha Dong District, Ha Noi City Enterprise code: 0110249529 Phone: 0972999902 Representative: Khuat Thi Thu Huong La Khe Ward, Ha Dong District, Ha Noi CityFounding date: 13 - 2 - 2023