Accessories refer to the parts or components used in the assembly of machines, equipment, or devices, and also to the replacement parts that need to be reinstalled after damage. Here is a brief introduction to their classification:

Standard Accessories: These are auxiliary components provided with the product at the time of factory delivery. They play a critical role in the basic use and performance of the product, and their absence may affect normal use.

Optional Accessories: These are components outside the standard configuration, used to enhance product functions, improve performance, or expand the scope of application. Their non-use typically does not affect the basic functionality of the product.