The main difference is on the surface of the product. The original flat plate is smoother than the flat plate, and the original roll is leveled by a straightener before cutting the flat plate. After a period of rest, the sickle bend of the original roll may appear.
The original flat plate is generally four-trimmed, and the open flat plate is generally two-trimmed, unless otherwise required.
The tolerance of the flat plate in thickness can be greater than that of the original flat plate.
If the flatness of the board is not very high, a flat plate can be used. The tablet is definitely not as good as the original tablet, but the price is also cheap.