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21 magg 1990 anni - 1990年5月21日上海特种灯泡二厂和上海轻工研究所联合研制成功双U形节能灯弯管机填补国内空白。

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1990年5月21日上海特种灯泡二厂和上海轻工研究所联合研制成功双U形节能灯弯管机填补国内空白。

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工业大事年表

2 set 2023

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688

Data:

21 magg 1990 anni

Adesso

~ 35 years ago

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