Dau Tu Xay Dung Ha Tang Ky Thuat Diem Thuy Joint Stock Company Address: Nga Ba Bac Nam, Civil Group 11, Gia Sang Ward, Tinh Thai Nguyen, Viet Nam Enterprise code: 4601651740 Phone: (0208) 6255886 Representative: Nguyen Manh Cuong Thai Nguyen ProvinceFounding date: 26 - 9 - 2025