The ZYH660D is a folio buckle-knife combination folding machine with a pile feeder or around feeder. Parallel folding of the ZYH660D can be carried out times with the buckle plates. The folding fonns of the signatures may be concertina fold, parallel fold or letter fold. The  ZYHJ660D can handle parallel folding 2 times. Rightangle folding can be carried out 3 times combination the buckle plates and the folding knives. At the same time of folding, perforating and creasing can be handled. The standard machine is suitable for handling 8mo, 16mo and 32mo signatures. The two-on folder can handle 32mo two-on signatures, except possessing the folding functions of the standard machine.

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