CF500DK Folding Machine,Punching Machine,Hole Punching Machine. 1) Folding 2) Punching 3) Max. Paper Width: 500 mm CF500DK Folding Machine,Punching Machine,Hole Punching Machine. Huatian CF series ... foling knife;it features precise punching and folding,convenient and simple operation, and high production efficiency. Maximum paper width500mm(20inch)Maximum ...