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2022-06-10

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Mingxin School: Is it because the copper wire turns black?

2022-10-18

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Mingxin School: Is it because the copper wire turns black?

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Yangzhou Association of Small and Medium Enterprises Visited Wubao County, Yulin City for Investigation and Research

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Is a copper wire with a diameter smaller than the national standard considered a non-standard cable?

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