Khao Sat Do Dac Ha Bac Joint Stock Company Address: No 06, Alley 20, 2 Tan Trieu Lane, Thanh Liet Ward, Ha Noi Town, Viet Nam, Ha Noi City Enterprise code: 0111654463 Phone: 0971658666; 0970968765 Representative: Bui Nguyen Kien Thanh Liet Ward, Ha Dong District, Ha Noi CityFounding date: 9 - 10 - 2026