Surface and flush mounted distribution box (board), featured with smooth surface, strong construction, adjustable size, and convenient installation. The shell of box is constructed of punched high quality steel plate, and the transparent door is made from injection molded polycarbonate composit. They are connected by new adjustable technology. And the Live part of boards adopts to full copper construction, with excellent conductivity and safe contact. It is widely applied into offcial and commercial buildings and other public places.