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Chapter 1173 Dayou Engineering Team
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... by elongated iron bars. As for the pattern on it, it didn't exist at all. It was not until Lao Lin came that someone specially improved it.
It can be said that the steel used today is similar to thick steel, although it cannot be as delicate as thick, nor can it reach the strength of the latter.
But at the very least, it is much stronger than the ones that exist today.
And there is another point that although today's steel is not as strong or as strong as the materials of l ...
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