????????ó????????????????θ?????????????臨?????????
2020??6??26???????????ó??????ITC????????????й?????????ī?????????????????θ???Light-Walled Rectangular Pipe and Tube??????????η????????臨?????????????????????????й????????θ??????????η????????臨??????????????????????????з?????????????????????????????????永?????????????????????????????????????????????????????y???????????з?????????????????????Ч???????t??У?5??????????ó?????????????????
2008??5??30?????????????????????????????????θ??????????????2008??8??5??????????????????????й????????θ????????????????????????й?????????ī??????????θ???????????????????????????????永???????????η???????????????臨????????ú???????2014??6??23????????????й??永????????????????й?????????ī????????????永?????????????2019??5??1??????????????????棬????????й?????????ī??????????????????θ?????????η????????臨?????????飬????????й????????θ?????????η????????臨?????????顣2019??8??27?????????????????????????????й?????????ī?????????????????θ??????????η????????????臨??????8??30?????????????????????????????й????????θ??????????η????????????臨????á?
?????????????????ó???????????
????????????
???? ?У???
????https://www.usitc.gov/press_room/news_release/2020/er0626ll1580.htm