1. In normal use, please pay attention to whether there are any "de-gearing", skew, etc. on the zipper. If you have these problems, you should repair them in time and don't pull them hard. If the zipper is loose and out of teeth, you can use a small hammer on the zipper head to tap it a few times to make the upper and lower chain teeth bite tighter, and you will not lose teeth again.
2. The zipper of aluminum alloy is more susceptible to corrosion, so it should be kept dry and not damp, in order to prevent the aluminum teeth from generating white oxides, which will cause the zipper to rust and affect the use. In contact with acidic substances. To ensure a certain degree of ventilation during storage, do not store it in a sealed or humid environment, use moisture-proof paper or desiccant if necessary. If the zipper gets wet after it gets wet, at this time, first dry the zipper, then apply some wax to the teeth of the zipper, and then bake it with fire, so it will be very lubricious when used.
3. When pulling the zipper, you should first align the teeth on both sides close together, then pinch the zipper head along the track and gently pull it forward, do not pull hard, so as not to cause "tooth skew" and "out-of-tooth". If the zipper is astringent and it is not flexible to pull, you can wipe it with a cloth and apply a layer of white wax on the "tooth".
4. Don't overfill all kinds of bags, pockets or wallets with zippers, otherwise the zippers will easily cause “out-of-tooth”, skew and soft cloth.