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2020??8??4??????????????????棬????????й????????Chloropicrin????????????????飩???з?????????????臨?????????顣????????????ó?????????????й??????????з?????????????臨?????????????飬???????????з??????????????????????????永???????????????????????????????????????????????????????????????淢???????10???????????????????????????????????2020??9??2?????????????ó????????????????????????2020??10??16???e???????????????????????ó?????????????????
1983??4??26???????????????й??????????з????????????顣1984??2??16??????????????й??????????????????????????????й?????????????????China National Chemicals Import and Export Corporation (SINOCHEM)?????????й????????????????????????58.0%??1984??3??22?????????????й??????????????????????????????????????ó????????й??永?????????????????????臨????????ú?1999??4??14????????????????й??永?????????????????????????????????ó????????й??永?????????????????????臨????????ú?2004??8??23????????????????й??永?????????????????????????????????ó????????й??永??????????????????????臨????????ú?2010??5??18?????????????????й??永?????????????????????????????????ó????????й??永?????????????????????臨????????ú?2015??9??22????????????????й??永??????????????永?????????Э?????????2904.90.50??
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https://www.federalregister.gov/documents/2020/08/04/2020-16879/initiation-of-five-year-sunset-reviews