Dau Tu Cong Nghe Ky Thuat So Chaintech Joint Stock Company Address: No 10, 45 Bui Huy Bich Lane, Hoang Liet Ward, Hoang Mai District, Ha Noi City Enterprise code: 0109874140 Phone: 0989472889 Representative: Hoang Quoc Dong Hoang Liet Ward, Hoang Mai District, Ha Noi CityFounding date: 29 - 12 - 2021