Snap closureMaterial and manufacturing process: Describe the material and manufacturing process of the keychain, as well as how it is made durable.Shape and size: Describe the shape and size of the keychain, so that buyers can better understand its dimensions and weight.Function and use: Describe the function and use of the keychain, such as whether it has a keyring or clasp, and if it can be used for different types of keys or other items.Design and style: Describe the design and style of the keychain, such as whether it has personalized or special patterns or colors.Packaging and service: Describe the packaging and after-sales service you provide, such as whether the packaging is exquisite and whether you offer returns or exchanges.