Dich Vu Van Hanh City Clean Joint Stock Company Address: No 10, Alley 34, 28B Dien Bien Phu Lane, Phuong, Ba Dinh District, Ha Noi City Enterprise code: 0111318172 Phone: 0941374111 Representative: Nguyen Lien Nang Ha Noi CityFounding date: 18 - 12 - 2025