Ky Thuat Va Thuong Mai Envicon LTD Address: 84 Hang Bac, Hang Bac Ward, Hoan Kiem District, Ha Noi City Enterprise code: 0106121156 Phone: 02438284608 Representative: Dao Dinh Binh Hang Bac Ward, Hoan Kiem District, Ha Noi CityFounding date: 13 - 3 - 2013