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apr 2, 1956 - 1956年4月2日永鑫五金制造厂轧制小口径无缝钢管成功，并正式投产。

Description:

1956年4月2日永鑫五金制造厂轧制小口径无缝钢管成功，并正式投产。

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工业大事年表

2 Sep 2023

1

0

731

Date:

apr 2, 1956

Now

~ 70 years ago

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