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apr 20, 1956 - 1956年4月20日上海市工业生产先进经验展览会开幕，共展出展品3368 件，介绍先进经验和合理建议的有1084 件。

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1956年4月20日上海市工业生产先进经验展览会开幕，共展出展品3368 件，介绍先进经验和合理建议的有1084 件。

Added to timeline:

工业大事年表

2 Sep 2023

1

0

731

Date:

apr 20, 1956

Now

~ 70 years ago

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