Y Te Sigma Viet Nam Joint Stock Company Address: Lot 13, Khu Tap The Ho Ke Khe, Doi Can Ward, Ba Dinh District, Ha Noi City Enterprise code: 0102029865 Phone: 0247222871 Representative: Vu Thanh Adress: Trang Hamlet, Thanh Liet Commune, Thanh Tri District, Ha Noi City Doi Can Ward, Ba Dinh District, Ha Noi CityFounding date: 19 - 9 - 2006