Sigma Viet Nam LTD Address: No 12, 160 Luong The Vinh Lane, Thanh Xuan Bac Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0101748955 Phone: 0245147729 Representative: Pham Dac Thai Adress: Tran Phu Hamlet, Minh Cuong Commune, Thuong Tin District, Ha Noi City Thanh Xuan Bac Ward, Thanh Xuan District, Ha Noi CityFounding date: 18 - 8 - 2005