He Thong Va Giai Phap Istech Joint Stock Company Address: No 1, Lane 216/218, Tran Duy Hung Street, Trung Hoa Ward, Cau Giay District, Ha Noi City Enterprise code: 0102686148 Phone: 0247841036 Representative: Nguyen Duy Hung Adress: P606, 9 Tang Thong Tan Building, Cau Dien Town, Tu Liem District, Ha Noi City Trung Hoa Ward, Cau Giay District, Ha Noi CityFounding date: 21 - 3 - 2008