Features: 1. The shaping effect is good, the tooth pitch is stable, and the straightness makes it easier to fit each other. 2. The tooth shape is neat and the tooth head is beautiful. 3. The accessories are durable and burr-free, and the quality of the zipper has no hidden danger. 4. Easy to operate and easy to use. Design streamlined. Fine workmanship, easy operation, stable performance Strengthening the functions of adding cold air, automatic mold loading and next mold loading can improve work efficiency.