First of all, it depends on the type of pants. If it is jeans, copper is traditional, followed by aluminum. If plastic is not good, it will be considered inferior to cutting corners.

Sports pants, hospital clothes, military clothes and factory uniforms are generally made of plastic, because metal is easy to ignite due to electrostatic discharge. Children's suggestion is to use spiral safety zipper without red belt. The most important thing is that you must not use inferior products, whether metal or plastic or nylon.

In addition, there are three categories of artificial materials: plastic, rubber and nylon. Therefore, nylon is its own category, not plastic, but many zippers are nylon, similar in appearance to plastic, but really not plastic. Nylon zippers are much more expensive than plastic zippers.

When using the zipper at ordinary times, pay attention to whether there are "broken belly", "off teeth", skew and other problems on the zipper. If there are these problems, they should be repaired in a timely manner, instead of hard pulling. If the zipper is loose and the teeth fall off, you can use a small hammer to gently knock on the zipper head to make the upper and lower chain teeth bite tightly, so that the teeth will not fall off again.

The zipper of aluminum alloy is easy to be corroded, so it should be kept dry and free from moisture to prevent aluminum teeth from generating white oxides, which will also lead to rust of the zipper over time and affect its use. At the same time, it should be careful not to contact with alkaline and acidic substances.

During storage, ensure a certain degree of ventilation. Do not store in a sealed environment or in a humid environment. If necessary, use moisture proof paper or desiccant.