????????ó?????????????????????η????????臨?????????
2021??3??15???????????ó??????ITC????????????й???????????Diamond Sawblades and Parts??????????η????????臨??????????????????????????з??????????????????????????永?????????????????????????????????????????????????????y???????????з??????????????Ч??????????У?5??????????ó?????????????????
2005??6??21??????????????????棬????????й?????????????????з????????????顣2009??1??23?????????????й?????????????????????????2011??10??24????????????????永???????????????2015??9??28???????????????????????ó????????й??永?????????????????????臨????????ú??????????????й??永?????????????2020??8??4??????????????????棬????????й????????????з?????????????臨?????????顣2020??12??7?????????????????????????????й?????????????????η????????????臨????á?
?????????????????ó???????????
????????????
??????У???
????https://www.usitc.gov/press_room/news_release/2021/er0315ll1736.htm