The first is the brand. If the machine itself is a product of a famous brand, then it is best to buy parts of the same brand.

Secondly, pay attention to the toughness of the product. You can buy more brands of products and compare them in practice.

Then, in terms of use, do a good job of protection. When the machine is running, you can add some lubricating oil for protection, which can effectively increase their service life.