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 manufacturers Original sometimes little difference with the specification when the first and probably the amount of the next size.