... ,much more stable and solid Accuracy :rolling ball screw from Germany ,two nut eliminating clearance ,advanced fixing mode of ... Artgrave 5. Convenient operatiion:Owning the functin of restoring from power off,continuation on break point,anticipating working time, ... ,reasonable price ,wide application ;can be applied to process any wood products ,sign boards ,bill plates ,chest brands ,seals ,metal foil ...