1 .When the opening and closing is not smooth, if the chain is pulled hard, a occlusal bite will occur. At this time, apply paraffin or lubricating spray [FASTENERMATE] on the surface and inside of the tooth, and then slide the slider several times to loosen it.
2 .When the zipper on the bag is too much when the thing is too much, if the zipper is closed, the zipper will be too strong, and the tooth will be detached from the belt. This is serious in the zipper failure. Pull the left and right teeth closer to make the chain easy to pass through the rear zipper.
3. When opening and closing the zipper, sometimes the chain bites the line segment or the fabric and the slider can not be pulled. In this case, if the slider is forced to pull, the bite will be deeper and deeper. And untie the cloth. When you are completely biting in, do not pull the slider vigorously. Please slowly pull the slider back. Also, when sewing the zipper, please do not leave hidden dangers.
4 .Clothes are worn for a long time. It is difficult to use because the zipper's slider is loose. At this time, you can use a pair of pliers (with no pliers or a bite with a tooth) to pinch the slider and tighten the slider. It will be easy to use;