Quang Cao Va Ky Thuat So Hoang Long LTD Address: 4th Floor, Udic Riverside 1 Building, No 122, Vinh Tuy Street, Vinh Hung Ward, Ha Noi Town, Viet Nam, Ha Noi City Enterprise code: 0111527578 Phone: 0825131586 Representative: Bui Van Hoang Vinh Hung Ward, Hoang Mai District, Ha Noi CityFounding date: 5 - 6 - 2026