Zipper Pin, Box & Top Stop Injection Molding Machine 1.stepping motor control 2.LED touch screen,PLC ... Auto Plastic Zipper Top Stop, Pin & Box Injection Molding Machine Function: produce top stop, pin & box for nylon and plastic zippers Average Output ... stop machine, bottom stop machine, top stop, pin and box injection molding machine, cutting machine.Fully auto zipper making machines and semi ...