1. Fixing keys

The most basic use of keychains is to fix keys for easy carrying and management. Keychains are usually composed of hooks and rings. By clipping keys to the rings, you can carry them with you to avoid loss or confusion.

2. Personalized decoration

Keychains are not only functional tools, but also personalized decorations to show the characteristics and personality of users. There are many styles of keychains on the market, and you can choose your favorite colors, patterns, etc.

3. Commercial promotion

Keychains are also a common commercial promotion gift. Since keychains can be printed with corporate logos and slogans, they can be used for corporate promotion and product promotion. Some well-known companies or brands will also launch limited edition or commemorative edition keychains to increase the brand's characteristics and collection value.

4. Other uses

In addition to the above three common uses, keychains can also be used to fix other small items, such as USB flash drives, gadgets, compasses, etc. In outdoor adventures or travel, the practicality and portability of keychains are also fully reflected.

To sum up, key chains have many uses, such as fixing keys, personalized decoration, commercial promotion and fixing small objects. They are a small, portable and multi-functional accessory product.