Joseph nodded slightly along with Philippe's narration.
This is akin to the difference between using a kitchen knife and a utility knife for cutting paper. The former will inevitably leave rough edges no matter how careful you are, while the latter can easily achieve smooth cuts.
He immediately looked at Jacques Renou: "What is that hard material you discovered? Oh, do you also have a laboratory?"
The latter waved his hands repeatedly: "No, no, Your Highness. I am just a technician at the Namu Royal Iron Refinery, working in Mr. Wandell's laboratory.
"In an alloy steel experiment, due to the mixing of impurities, specifically trace amounts of silicon, I noticed that the resulting waste material had extremely high hardness, which reminded me of Philippe's milling machine. In fact, he used the Royal Iron Refinery's patent authorization."
