Hello Smile LTD Address: 328 Ong Ich Khiem, Phuong, Thanh Khe District, Da Nang City Enterprise code: 0402358814 Phone: 0349692026 Representative: Nguyen Tan Danh Thanh Khe Ward, Thanh Khe District, Da Nang CityFounding date: 1 - 10 - 2026