Att Systems (Viet Nam) LTD Address: No 26, Alley 13, Lane 241, Kham Thien Street, Tho Quan Ward, Dong Da District, Ha Noi City Enterprise code: 0105744937 Phone: 02435134901 Representative: Nguyen Huyen Trang Adress: No 33 An Duong, Yen Phu Ward, Tay Ho District, Ha Noi City Trung Liet Ward, Dong Da District, Ha Noi CityFounding date: 19 - 12 - 2011