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10 magg 1969 anni - 1969年5月10日上海第三钢铁厂试制成功中国第一台大张塑料复合钢板机组，轧出国内第一张大张塑料复合钢板。

Descrizione:

1969年5月10日上海第三钢铁厂试制成功中国第一台大张塑料复合钢板机组，轧出国内第一张大张塑料复合钢板。

Aggiunto al nastro di tempo:

工业大事年表

2 set 2023

1

0

686

Data:

10 magg 1969 anni

Adesso

~ 56 years ago

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