2021??3??29???30???????????ó??????CITT????????????????CBSA??????????棬??????????????й?????壨Steel Grating?????????η???????????????臨?????????顣?永????????????73089090.10??73089090.20??73089090.30??73089090.40??73089090.50??73089090.60??73089090.91??73089090.92??73089090.93??73089090.94??73089090.95??73089090.96??73089090.99?????????????2021??5??6????????????臨???????????????????????????????2021??8??26???????????臨???????????á?

2010??9??20?????????????????????й???????????????顣2011??3??21?????????????????e?????????????????????????á?2015??8??13??????????????????й??永?????????????????臨????顣2015??12??10??????????????????й??永??????????????????臨????????á?2016??4??18???????????ó???????й??永??????????????????臨?????????????á?

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

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

??????У???

????https://www.cbsa-asfc.gc.ca/sima-lmsi/er-rre/sg2021/sg2021-ni-eng.html