Nhom Viet Han-Vihalco Joint Stock Company Address: P742, Nha N7 Tap The Quan Doi, Nghia Tan Ward, Cau Giay District, Ha Noi City Enterprise code: 0103226048 Phone: 02437543878 Representative: Tang Trung Thanh Adress: P742, Nha N7 Tap The Quan Doi, Nghia Tan Ward, Cau Giay District, Ha Noi City Nghia Tan Ward, Cau Giay District, Ha Noi CityFounding date: 22 - 1 - 2009