Although 3D printing has been out for some time, the technology is still immature, especially in the research and development of materials. The overall cost is high, and there is no maturity of CNC machine tools. It can't completely replace numerical control. A large number of shaft parts processed by machine tools are relatively high-end and have high requirements for parts, so the requirements for machine tools are also high. 3D printing is temporarily irreplaceable. Just as e-commerce is so popular, it has not completely replaced offline entity management, and each has its own advantages and disadvantages, which complement each other.

Recently, it is also said in China that Foxconn will introduce robots to replace labor. Many people are worried that many people will lose their jobs in the future. It may be a trend to use robots, but the cost of robots is very high, and the later maintenance cost is also a large part, far higher than manpower. Cheap manpower is also the main source of strength for Foxconn. Even so, other new industries will appear accordingly. Who would have thought that mobile phones and computers were so common 20 years ago, but now they have spawned the maintenance of mobile phones and computers. The emergence of e-commerce has solved a lot of work on the Internet. The future is unknown. What we have to do is to keep learning and keep up with development so as not to fall behind.