Summa Joint Stock Company Address: No 101, Lane 266, Doi Can Street, Cong Vi Ward, Ba Dinh District, Ha Noi City Enterprise code: 0104510950 Phone: 02437648426 Representative: Tran Duc An Adress: No 783, Hong Ha Street, Chuong Duong Ward, Hoan Kiem District, Ha Noi City Cong Vi Ward, Ba Dinh District, Ha Noi CityFounding date: 5 - 3 - 2010