2020??2??28???????????ó??????USITC????????????й??????225??999cc?????????????????????Vertical Shaft Engines Between 225ccand 999cc, and Parts Thereof?????????????????????????????????????????????????????????????????永?????????????????????????????????????????ó????????й??永???????????????????????????????永??????з???????????????飬??????2020??4??9??????????????????2020??6??23????????????????á?

2020??2??5????????????????????????????Coalition of American Vertical Engine Producers????2020??1??15??????????????????????????????й??????225??999cc?????????????????????????????????????????顣?????漰????Э????????8407.90.1020??8407.90.1060??8407.90.1080??8409.91.9990???2???????8407.90.9060??8407.90.9080???μ????????

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????https://www.usitc.gov/press_room/news_release/2020/er0228ll1403.htm