????????ó?????????·??????????????????????????????????????
2022??6??14???????????ó??????USITC????????????й?????·?????????????????????Freight Rail Coupler Systems and Components Thereof?????????????????????????????????????????????òt????????????????????永???δ????????????????????????????????????ó??????????????????????????????????й????永?????????????????????????漰????Э????????8607.30.1000???μ?????
2021??10??20??????????????Coalition of Freight Coupler Producers??2021??9??29??????????????????????????????й?????·?????????????????????????????????????顣2022??5??17???????????????????????й?????·????????????????????????????????????á?2022??5??24???????????????????????й?????·????????????????????????????????????á?
?????????????????ó???????????
????????????
??????У???
????https://www.usitc.gov/press_room/news_release/2022/er0614ll1950.htm