... belt can be adjusted around Gluing and folding part1.main motor using variable frequency speed , no noise , easily adjusting and steady 2. ... pushes the positioning system , high forming accuracy .5.Folding speed : 0~ 130 sheets /minCount and stacker 1.Adopting ... , automatic stack , output neatly 2.Counting department main motor frequency control ,speed can be adjusted ,and opening steady .3. Using belt ...