So far, most of them have used version 2.0 3.0. The difference between the two versions is not too big. It is more convenient to use version 2.0 first and then version 3.0. It is difficult to find some differences between version 3.0 and version 2.0. Now some stubborn factories are still using 200 1. I applied twice.

About cad is now the most basic and popular software, and all the factories I have seen use CAD. Software is just a tool. Although they all use the same software, different industries do different things, and the interlacing is like a mountain. If you want to enter a new industry, without any knowledge and experience, no matter how skilled the software is, it is useless.