Thuong Mai & Dich Vu Dh Audio LTD Address: Phuong Nhi Hamlet, Ngoc Hoi Commune, Thanh Tri District, Ha Noi City Enterprise code: 0111462377 Phone: 0914603863 Representative: Nguyen Viet Duong Ngoc Hoi Commune, Thanh Tri District, Ha Noi CityFounding date: 15 - 4 - 2026