2020??3??19???????????ó??????ITC????????????й????????????????Carbon and AlloySteel Threaded Rod???????????????????????????????á?????β???У?5??????ó?????????????????????????????ó?????????????????????????????????й??????????????????????????????????????漰????Э????????7318.15.5051??7318.15.5056??7318.15.5090???2???????7318.15.2095??7318.19.0000???2???????

2019??3??14???????????Vulcan ThreadedProducts Inc.??2019??2??21??????????????????????????????й????????й????????????????????????????????????飬??????????й????????永??????????????????顣2019??4??5???????????ó?????????????й????????й????????????????????????????????????????????????????й????????永?????????????????????á?2019??9??20???????????????????????й????????й??????????????????????????????????á?2019??7??23???????????????????????й????????????????????????????á?2020??2??10???????????????????????й???????????????????????????????????????á???????????2018?????????й????????й???????????????????????????????????1.047???????3580???????5110???????580???????

?????????????????ó???????????

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

??????У???

????https://www.usitc.gov/press_room/news_release/2020/er0319ll1456.htm