maidianintroduced the zyh660a folding machine developed and manufactured by shanghai zihong machinery co., ltd. the maximum folding paper of this machine is 660x1040mm, the minimum folding paper is 150x200mm, the folding sheet range is 40~1800g/㎡, the maximum folding roller speed is 150m/min, the maximum folding knife frequency is 120stroke/min.zyh660a folding machine can be four times and three times vertical folding, can choose 32 open double device, its high speed, reliable, good synchronicity, the operation panel adopts human-machine interface display, fault display function.zyh660a folding machine is the first paper folding machine introduced by maidian. its introduction has ended the era of pure manual folding of maidian, saved production costs and laid a solid foundation for the development of maidian.