2022??6??13???????????????????????δ?й??????????????????????????й??????????????????????????????Helical Spring Lock Washers???????????????????????й?????????????????????????????????η????????臨????顣

1993??6??28??????????????????????????????????????????????????????1993??10??19??????????????????й???????????????????????????????????????????4?????臨?????????2001??2??23???2006??7??3???2011??12??5???2017??5??26???4???????????????2022??4??1??????????????????棬????????й???????????????????????????????????η????????臨????顣

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????https://www.federalregister.gov/documents/2022/06/13/2022-12710/helical-spring-lock-washers-from-peoples-republic-of-china-and-taiwan-final-results-of-fifth-sunset#citation-3-p35733