Ky Thuat Thuong Mai Va Dich Vu D4F LTD Address: Tran Xa Hamlet, Yen Trung Commune, Yen Phong District, Bac Ninh Province Enterprise code: 2301016166 Phone: 0989039576 Representative: Do Van Tuyen Adress: Tran Xa Hamlet, Yen Trung Commune, Yen Phong District, Bac Ninh Province Yen Trung Commune, Yen Phong District, Bac Ninh ProvinceFounding date: 9 - 1 - 2018