2019??10??31???????????ó??????USITC????????????й????????????????Malleable Iron Pipe Fittings???????????η????????臨??????????????????????????з??????????????????????????永?????????????????????????????????????????????????????y???????????з??????????????Ч??

2002??11??25???????????????????й??????????????????????????????顣2003??10??21???????????????????й???????????????????????????????á??????????????永???????????η????????臨????????ú???????2009??4??22????????????永??????????????????????????永???????????η????????臨????????ú???????2014??8??12??????????永?????????????2019??7??1??????????????????棬?????????й??????????????????????η????????臨?????????顣2019??11??1?????????????????????????????й???????????????????????η????????????臨????á?

?????????????????ó???????????

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

??????У???

????https://www.usitc.gov/press_room/news_release/2019/er1031ll1184.htm