区分差异的一个很好的理由是因为冲压和冲压的制造商几乎总是不同的，你不会去找一个专门打孔的钣金加工商，要求冲压，反之亦然，这是由于实现冲压与冲压不同的设备。A good reason to differentiate is that stamping and stamping manufacturers are almost always different, and you don't g
2023-06-09 fancadmin
