Tu Van Khoa Hoc Va Cong Nghe Ava Viet Nam Joint Stock Company Address: No 21, Lane 68, Nguyen Khuyen Street, Van Quan Ward, Ha Dong District, Ha Noi City Enterprise code: 0107761617 Phone: 02432939325 Representative: Tran Quang Hung Van Quan Ward, Ha Dong District, Ha Noi CityFounding date: 14 - 3 - 2017