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Chapter 987 983 [Printing Revolution]
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Chapter 989 985【Rubber and Mayan Temple】
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... es and steel molds, which can be stamped out of copper molds in large quantities and at low cost.
I heard that a Foshan blacksmith was actually appointed as the deputy supervisor of the Ministry of Industry Foundry. The official typecasters couldn't sit still, and Zhang Shunmin, a doctor in the Ministry of Industry, begged for an interview.
"Why, you also invented a new type of casting method?" Zhao Han asked with a smile.
Zhang Shunmin replied: "Reporting to Your Maj ...
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