He Thong Ky Thuat Cong Trinh Ha Noi Joint Stock Company Address: No 06, Alley 126/30, Lane 126, Vinh Hung Ward, Hoang Mai District, Ha Noi City Enterprise code: 0105184435 Phone: 0904273083 Representative: Phung Manh Phu Adress: No 67, Ngo Quyen Street, Ngo Quyen Ward, Son Tay Town, Ha Noi City Vinh Hung Ward, Hoang Mai District, Ha Noi CityFounding date: 10 - 3 - 2011