Dau Tu Va Cong Nghe Viettek Joint Stock Company Address: 2nd Floor, N01-HH1, No 47, Nguyen Tuan Street, Phuong, Thanh Xuan District, Ha Noi City Enterprise code: 0111212377 Phone: 0982501102 Representative: Nguyen Linh Nam Ha Noi CityFounding date: 10 - 9 - 2025