with good  Profile  and  high  Dimension accuracy, the product higher than 3.9mmin Thickness can be de-coiled in the  most  advanced domestic cut-to-length Line, which guarantees good flatness, i.E, unflatness of de-coiled/sheet10mm/m.the unflatness of the product with thickness lower than 3mm can Be guaranteed as   <15mm/m after standard Decoiling through finishing.