Zippers can be divided into opening and closing, and the top and bottom stops are also different. The opening zipper is divided into left and right sides, and the bottom stop (left and right pins and sockets) needs to be used to make the left and right sides can be closed and opened. The top stop is to control the pull head not to get stuck on the fabric tape, the closed bottom stop is closed and cannot be separated. The top stop is possible to open and close back and forth, but the entire zipper cannot be separated. Its top and bottom stops are beautiful and prevent the pull head from pulling onto the fabric tape, It's not easy to get stuck.

Normally, the open end zipper must have a top and bottom stop, but the closed end zipper does not necessarily need to have a top and bottom stop, which depends on the customer's requirements and design. For example, the pocket zipper of clothing can have a zipper that does not need to have a top and bottom stop, and there are zippers that do not need to go to the top and bottom stop. When zippering clothes in the car, we must bring the zipper cloth to the end, that is, the zipper teeth on the car, or one or two teeth can be pulled in. This way, when using zippers for clothing in the future, It will not cause the zipper head to pull too far out of the fabric end and get stuck.