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The iron smelting process
Chinese metallurgists are responsible for the earliest variants of iron and steel smelting processes (5th century B.C.). Well you see, the bloom period for the smelting of these metals spans from 202 B.C. to 557 A.D., right after the private enterprises were absorbed by the state, creating a monopoly. Qiwu Huaiwen is regarded as the inventor of the process.
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