... machine has seven functions : creasing ,binding ,pressing ,cover making ,edge holding ,cover corner cutting and grooving1.Delicate design ... with high efficiency .Combine electric with pneumatic ,easy operation and make sure the albums without deformation ,tackless and crack 2.Cover making with ... 4.Aluminium alloy knife,can be creased with delicate marks and not easy to be broke 5.Grooving ,about ...