Phat Trien Cong Nghe Dong Son Joint Stock Company Address: No 09, Hem 01/62/48 Bui Xuong Trach, Khuong Dinh Ward, Ha Noi City, Viet Nam, Ha Noi City Enterprise code: 0111260363 Phone: 0978922423 Ha Noi CityFounding date: 23 - 10 - 2025