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may 9, 1989 - 电1989年5月29日上海光纤通信工程公司、邮电部上海通信设备厂与荷兰美国电话电报国。

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1989年5月29日上海光纤通信工程公司、邮电部上海通信设备厂与荷兰美国电话电报国。

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工业大事年表

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may 9, 1989

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~ 36 years ago

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