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v3 Chapter 262 iron ore
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... ng's smelting of metals has always been in preparation for the construction of large spaceships, and the expansion of the base is just a matter of course.
After all, although steel has good performance, it is too heavy. In terms of making aircraft, it is difficult to compare with aluminum with the same abundant reserves, and titanium with stronger performance.
And in a vacuum environment, the difficulty of refining aluminum and titanium is no higher than that of steel, so the produ ...
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