The emperor stood next to Cheng Runnian, and naturally he had a clear view, but he was not sure what this thing was.

Qingbo didn't know the identity of the emperor, but seeing that he had an extraordinary temperament and was well dressed, he didn't dare to slack off, and said: "This lord, this thing is called stainless steel." ”

That's right, it's stainless steel, compared to the traditional 100 steel, but with a certain amount of chromium and carbon......

"Why does the emperor always want to cut me" Chapter 57 This is good steel It's hitting in the hand, please wait a moment,

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