Belts: Because the metal zipper tape with polyester thread, suture, the core line of different types of silk composition, its weight, coloring are different, so in the same zipper prone to color, this time in the Select the cloth with the choice of dyeing evenly, no turbid spots, different fabrics are made of soft cloth with the main soft.

Mouth: the metal zipper teeth are plated electroplating color, so the purchase must pay attention to its surface color is evenly plated, there is no color flowers phenomenon, when pulling up and down the zipper is smooth. Zipper in the pull, you must observe whether the left and right teeth are bite each other, asymmetric zipper teeth will certainly affect the use of zipper.

Pull the head: the shape of the metal zipper pull more, the finished product can be small and meticulous, you can also bold and majestic. But no matter what kind of pull head, have to feel the pull of the first pull is comfortable, will not pull the zipper or not close together the phenomenon. Now available in the market are equipped with self-locking slider device, so after the zipper pull, you have to test the next lock after the zipper will slide down.