2021??11??5?????????????????????????????й???????????????Hydrofluorocarbon Blends and Components??????????η????????臨???????????????????????????????????й??永???????????285.73%??????????????????????永?????????Э?????????3824.78.0020??3824.78.0050??

2015??7??16???????????????????????й?????????Ｐ??????з????????????顣2016??6??22?????????????????????????й?????????Ｐ?????????????????????á?2019??6??18????????HFC?????the American HFC Coalition????????????????????????й????????????????з???????????顣2020??9??28?????????????e?????????????????????????????????????????????????CBP????????????й????R-404A??R-407A??R-407C??R-410A??R-507A/R-507?????????????????????????????????????2019??6??18???????????δ?????????永?????2021??7??1??????????????????棬????????й????????????????????η????????臨?????????顣

?????????????????????

????????????

??????У???

????

https://www.federalregister.gov/documents/2021/11/05/2021-24185/hydrofluorocarbon-blends-from-the-peoples-republic-of-china-final-results-of-the-expedited-first