2023??3??20?????????????????????????????й????1???????????????????????????λ?е???Cold-Drawn Mechanical Tubing??????????η????????????臨?????????????????????????????????????й??永???????????186.89%????????????????????????????μ1??永???????????209.06%?????????????????????????????????永???????????33.80%???????????????????????????????????永???????????68.95%????????????????????????????o????永???????????48.00%?????????????????????????????????永???????????30.48%???????????????????????

2017??5??10???????????????????й????1???????????????????????????λ?е????????????飬??????????й????????永??????????????顣2017??9??19???????????????????й?????????λ?е???????????????á?2017??11??16???????????????????й????1???????????????????????????λ?е???????????????????á?2017??12??5???????????????????й?????????λ?е??????????????á?2018??4??10???????????????????й????1???????????????????????????λ?е???????????????????á?2023??1??2??????????????????棬????????й????1???????????????????????????λ?е????????η????????臨????顢????????й?????????λ?е????????η????????臨????顣

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????https://www.federalregister.gov/documents/2023/03/20/2023-05619/certain-cold-drawn-mechanical-tubing-of-carbon-and-alloy-steel-from-the-peoples-republic-of-china