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19 dic 1980 anni - 1980年12 月19日上海第二铜管厂试制成功 LD2直径5x0.3 毫米铝合金航空散热管，填补国内空白。

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1980年12 月19日上海第二铜管厂试制成功 LD2直径5x0.3 毫米铝合金航空散热管，填补国内空白。

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工业大事年表

2 set 2023

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689

Data:

19 dic 1980 anni

Adesso

~ 44 years ago

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