Generally speaking, we classify gifts, in promotional gifts, we are used to refer to the key chain as a large category, but you do not know, in fact, the key chain can also be a lot of types, I will follow The material of the key chain is used to briefly introduce their classification.

key chain are more common in everyday life and are often used. So what are the common types of key chain we have? Let's take a look at the common types of key chain.