2020??7??15?????????????????????????????й????????????????Polyvinyl Alcohol???????????η????????????臨????????????????????????????????????й???????永??????????????97.86%??144.16%????????????????????????永?????????Э?????????3905.30.00??

2003??7??2??????????????????????????????????????2003??10??1????????????????й??????????????????????????????????永?????????????????????臨????????ú???????2009??4??13????????????й???????永??????????????????????????永?????????????????????臨????????ú???????2015??5??27??????????й???????永?????????????2020??4??1??????????????????棬????????й????????????????????????????????臨?????????顣

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https://www.federalregister.gov/documents/2020/07/15/2020-15282/polyvinyl-alcohol-from-the-peoples-republic-of-china-and-japan-final-results-of-the-expedited-sunset