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A type of low quality steel , typically in tools. Most samples are low quality mild steel, or overhardened carbon steel. A good way to tell if an object is made of chinesium is checking the stamp. If the stamp says "H.S.S.", "HSS" or similar and is labeled "Made in China/Taiwan" it is probable chinesium. Another way to see is if it breaks or becomes dysfunctional very quickly.
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