2020??2??10???WTO??????????????????????????????????????2020??2??10??????????????????????Threaded Fasteners of Iron or Steel??????????????????????永???????????????????????????????????￡??????2020??3??27??~2021??3??26????54.04%???????2021??3??27??~2022??3??26????52.04%????????2022??3??27??~2023??3??26??? ?50.04%???永????????????7318.15.41??7318.15.42??7318.16.30???????????????2014??7??1??~2018??6??30???

2019??3??4???WTO??????????????????????????????????????????2019??3??1??????????Э??South African Iron and Steel Institute?????????????????????????????????????????顣

???????????ó?????????

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

??????У???

????

https://docsonline.wto.org/dol2fe/Pages/SS/directdoc.aspx?filename=q:/G/SG/N8ZAF6.pdf