PCB槽孔的主要作用于客户端零件的插装或安装，其品质直接影响到客户产品的安装及使用。
如果生产的槽孔有变形、槽大、槽小等品质缺陷，客户端将无法进行插件作业。
The main function of PCB slot holes is for the insertion or installation of client components,
and their quality directly affects the installation and use of customer products.
If the produced slot holes have quality defects such as deformation, large slots.
or small slots, the client will be unable to perform the insertion operation.