2021??10??20????????Coalition of Freight Coupler Producers??2021??9??29??????????????????????????????й?????·?????????????????????Freight Rail Coupler Systems and Components Thereof?????????????????????????顣?????漰????Э????????8607.30.1000???μ?????????????ó??????ITC????????2021??11??15??????????????????á?

??????????2020?????????й??永???????????2795???????

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https://www.trade.gov/faq/initiation-antidumping-duty-and-countervailing-duty-investigations-freight-rail-coupler-systems