The PWB is considered to be one component.

印刷电路板仅被看作为一个部件。

Is the machine Program Name traceable to the PWB and PCBA part number?

是计算机程序名称可追溯到印制线路板及PC ba部件号吗？

Please find the typical process for single layer PWB for your reference.

您可以用下面的单层板典型流程做参考。

The stamp hole on PWB is very common, but the PTH stamp hole is unusual.

印制板的邮票孔是很普通的加工方法，但金属化邮票孔就不常见了。

This handbook is the guide to help you to understand UL certification procedure clearly for PWB category.

本手册是帮助您了解向UL美华申请印刷电路板UL认证的流程与基本认知。