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7406202000 
白铜或德银制片状粉末
Flakes , of copper-nickel base alloys(cupronickel)or copper-nickel-zinc base alloys(nickel silver) |
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7406102000 
白铜或德银制非片状粉末
Powders of non-lamellar structure,of copper-nickel base alloys(cupronickel)or copper-nickel-zinc base alloys(nickel silver) |
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