YKK genuine metal zipper luggage zipper

The metal zipper has three kinds of teeth, and the specific teeth are as follows:
1. P teeth, also known as round teeth, are characterized by the round teeth of the zipper. This kind of zipper is common in life, also known as ordinary zipper;
2. Y teeth (imitation YKK type), which is often called square teeth (y-tooth zipper), are characterized in that the teeth of the zipper are square;
3. Fine tooth zipper is characterized by double point and double pull, that is, you call double point teeth. At present, the technology is not very mature and the output is relatively low.