protel格式的原件封装库，共3个类别，是原创的不是软件自带的。可以直接使用，当然有时候各个厂家原件有时候有点差别，用的时候先和规格书大概量下尺寸。-Protel format components package library, a total of three categories, is not the software that comes with the original. Can be used directly, of course, sometimes all manufa