The frame is specially jointed by steel with high quality and then does spe-cial process.
Adopt new mechanical linkage device, realized complete synchronous cor-ner combining.
Synchro Feeding structure make the adjustment very easy.
Screw thread regulates the distance between up and down crimping blade ensures regulates blades easily.
It is collocate single cutter of many points crimping cutter ensure reliably crimping heat insulation aluminum windows and doors.