TM & DV Ky Thuat Hoang Gia Joint Stock Company Address: No 21, Alley 222/16, Tuu Liet Hamlet, Hoang Liet Ward, Hoang Mai District, Ha Noi City Enterprise code: 0111583011 Phone: 0338111989 Representative: Truong Ngoc Tuan Hoang Liet Ward, Hoang Mai District, Ha Noi CityFounding date: 28 - 7 - 2026