... 1.strongly fasten, good shape 2.semi-auto is also available 3.high stability TYM-215N Auto Double Top Stop Nylon Zipper ... , pulls, ect. Zipper machines we can offer: gapping machine, auto gapping and bottom stop setting machine, film sealing machine, punching ... box injection molding machine, cutting machine. Fully auto zipper making machines and semi-auto making machines are both available. You are ...