Tu Van Va Kiem Dinh Chat Luong Cong Trinh Joint Stock Company Address: No 16, Lane 61, Nguyen Viet Xuan Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0102228349 Phone: 0242517388 Representative: Nguyen Van Tuan Adress: Doc Hamlet, Lien Bao Commune, Tien Du District, Bac Ninh Province Khuong Mai Ward, Thanh Xuan District, Ha Noi CityFounding date: 25 - 4 - 2007