Very nice story, one question:

来源: xia23 于 2022-04-13 13:08:55 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (150 bytes)

when you worked with a solder iron, do you use a fume extractor to remove the poisonous fume (rosin when burnt, releases formal aldehyde )?

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