Weldo Automatic Injection Machine for PVC zipper pullers can meet your various requirements for PVC zippler pullers. Weldo Automatic Injection Machine can euip with more wire tips on the machine which likes to add more robort arms to work simultaneously , in this way that can help you greatly increase the production. For the order with different colorful designs , you can set up the machine to make it work under a task of 8 colors and 4 designs.