As far as the obsession with steel is concerned, Germany is unparalleled. Of course, its machine tools have reached the top level. What the Japanese are good at is mechanical software. As far as lathes are concerned, they are not as good as our country. However, the materials are very poor, leading to a "heart attack" in the military industry. The United States does not talk about a pure business model. Profit is priority. There is no need to build what can be bought, but where is the technical reserve?