Hoang Long Smart LTD Address: 157 Khu 6, Yen Dinh Town, Hai Hau District, Nam Dinh Province Enterprise code: 0601121369 Phone: 0964987556 Representative: Tran Doanh Adress: Tan Tien, Tan Thanh Ward, Duong Kinh District, Hai Phong City Founding date: 2 - 11 - 2016