2021??6??1??????????????????棬????????й??????t??Magnesium Metal??????????η????????臨???????????????????????????ó??????ITC??????????????????臨?????????飬???????????з??????????????????????????永???????????????????????????????????????????????????????????????淢???????10???????????????????????????????????2021??7??1?????????????ó????????????????????????2021??8??13???e???????????????????????ó?????????????????

2004??3??25???????????????????й??????t???з????????????顣2005??4??15??????????????????й??????t?????????????????????????永???????????η????????臨????????ú???????2011??3??11??????????永??????????????????????????永???????????η????????臨????????ú???????2016??7??21??????????永?????????????

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https://www.federalregister.gov/documents/2021/06/01/2021-11249/magnesium-from-china-institution-of-a-five-year-review

https://www.federalregister.gov/documents/2021/06/01/2021-11473/initiation-of-five-year-sunset-reviews