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Precious metal vacuum casting machine
In the process of metal heating, The machine can vacumm pumping or inert gas inflate to make the gold or silver ingot surface looks more bright and smoothy, and without any oxidized or other loss.
In the process of metal heating, The machine can vacumm pumping or inert gas inflate to make the gold or silver ingot surface looks more bright and smoothy, and without any oxidized or other loss.