è?????????μ???¨???è′§?o-??1??????????μ???¨???è′§?o-??·???è?????a???±±???é??é?μè??é?￠??????????3¨????2??o-???é?????????±??????ˉ????§???¨???????-? 12?1′????o§???éa??????·?????′?????????
??????,?????ˉ????????￥?????oè?a????????°??o?????????é?¨???,???é?????????????????????????°?????????è????°???????¤o,é??????????￥??????????????????,???è???????ˉ??????????????????????????????3 ~ 10???????????????????????????????°??o?4%???é?1????????????????μ·?¤???μ?????3?????ˉ?????ˉ???è???????????????-???????è°?,?°?è?￥??????é??è???????ˉ??????,260??????260??????è′-?1°?????a?¤§?????o,?1?????????a???èμ????????????§è??????????¨è°???¤???????§?,?°?????¤??????????è????????????????????,?1??????o????§??????·???è|??±???¨?????ˉè??è????1é?￠,?????ˉ????¤??2??￥?????????-????????o???????·¨?¤§???èˉ±???,?????????è?a?·±?????????,???????????°???????????-?????o????????????1962?1′???è′???????????3????1962??????,????????????é?¨??￡???4????o?è????￡é???o§?????ˉ??|?¨?è??????????3?????????????????¨??ˉ??¨è°???￥???????¤????,????????????é?¨é?¨é???????ˉ?·??1??????èˉ′,????o??°???¨6????o???????232?1′è°???￥????????￥?????3?o?è????￡é???o§??????é???????????????????￥????????′è??,è???¤???????è′??????????(WTO)????????????????????3è??????????μ?????ˉè???ˉ?è?′????????????è?¨?¤o?????§?±???????è′????é???????????????°?è§??¨?é?￠?????????????¤??o???￡??????????1′???????ˉ??????°??¨é?￠???????????o??oè????o???????o§???????±?????????o????????-?°????????°?èˉ?????????o????°??o??????￥???????????oé???±?è?????????|???°??¨??oé??é?μè??é?￠?????????????o??ˉ1?2????è???1??¤?????°?????????aè|???￠é?ˉ??????é???????o???????¤??????°??¨?????oé???±???1?ˉ1????????1èμ?è′¨????????ˉ????????o???èa??-??????a??1é?￠é?????è|??±??????-?°???????????·￥?¨????é???o|è????￥è???¤§????????°?·￥?¨???￥????1????è????o????????3?-??¤±èˉˉ????????oa????°??￥???è?????????o??ˉ1?????¨è??è§?????????°??ˉ???a???????????é??é?????è·ˉ???????2?????2??o-
è?????????μ???¨???è′§?o-??1??????????μ???¨???è′§?o-??·???è?????a???±±???é??é?μè??é?￠??????????3¨????2??o-???é?????????±??????ˉ????§???¨???????-? 12?1′????o§???éa??????·?????′?????????
??????2??????é?￠???é????¨????±?è???°¨é?ˉ?????????????????¤?±?12mm?????¨???????¤????é????¨2mm????¤????é????????????????????é????¨2mm???é???????o???????????-?????o???????????1????????????1962?1′è′????????±??3???????232??????,????????????é?¨?o?????1′4????o???￡????ˉ1è????￡é???o§?????ˉ??|?¨?è??????????3?????????????????¨??ˉ??¨è°???￥?????￥???,????????????é?¨é?¨é???????ˉè?¨?¤o,??1??????????o??°??o?6????o????????????3è????￡é???o§??????232è°???￥????????￥??????é?????è°???￥??????????????￥????????′è??,è???¤????è′???????(WTO)????????????????????3??1é???ˉ1?-¤?????ˉè????????????????????é??????±????è′????é???????a???è?¨?¤o?????§?????????é??è′-????1???·????2??o-???????1???·????2??o-??′é?????è?a?·±?????¨??????è???¤???¨??·è?a?·±é???ˉ?è??è?·??????è??è?a?·±è|??±?????????????è????ˉ?o§??????è′¨???????????|???è?a?·±?????°??¨?????¨??¨??·???è§??o|?????o????o???oè?????