If we look at China's high-speed rail industry, technology introduction is indeed a good development path. Our high-end CNC precision machining can make it stronger first and then bigger. Moreover, the introduction of technology saves money and time. If you are developing independently, you may take a lot of detours. China has the world's largest spare parts processing market, and the introduction of technology can also catch up. Under the condition of backward spare parts processing technology, if our metal processing enterprises can introduce external technology, they should take advantage of the opportunity and introduce technology for development.

Since the reform and opening up, my country's CNC precision machining industry has seized the historical opportunity of the transfer of global industrial division of labor, and achieved great success by introducing technology and opening up in an all-round way. Over the past 40 years, the cluster of spare parts processing industries in the coastal areas of Guangdong has grown, which is the best proof. Relying on the introduction of metal processing technology to develop three-to-one-supplement trade, my country has now built a technical processing system of a certain scale.