Happyring Viet Nam Joint Stock Company Address: No 35, Lane 1/62/26, Bui Xuong Trach Street, Khuong Dinh Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0105612987 Phone: 0945410401 Representative: Vu Thi Ai Adress: P706, Nha B11D Nam Trung Yen, Trung Hoa Ward, Cau Giay District, Ha Noi City Khuong Dinh Ward, Thanh Xuan District, Ha Noi CityFounding date: 4 - 11 - 2011