2022??7??22????????????????CBSA??????????????????????????й???????????Oil Country Tubular Goods Pup Joints??????????η???????????????臨?????????????????????????????????????????永?????????????????????????????????????????????????ó??????CITT????????2022??12??29??????????????????臨????????á??永??????????????60.3????~114.3??????????61????~366?????????????????????7304.29.00.42??7304.29.00.43??7304.29.00.44??7304.29.00.45??7304.29.00.46??7304.29.00.47??7304.29.00.49??7304.29.00.52??7304.29.00.53??7304.29.00.54??7304.29.00.55??7304.29.00.56??7304.29.00.57??7304.29.00.59??7304.29.00.62??7304.29.00.63??7304.29.00.64??7304.29.00.65??7304.29.00.66??7304.29.00.67??7304.29.00.69??7304.29.00.72??7304.29.00.73??7304.29.00.74??7304.29.00.75??7304.29.00.76??7304.29.00.77??7304.29.00.79??

2011??9??12?????????Alberta Oil Tool??Dover Corporation (Canada) Limited?????????2011??7??22????????????????????????????????????й???????????????????????????顣2012??3??12?????????????????????????????й??????????????????????????????????á?2012??4??10???????????ó??????e????????????????????á?2016??8??3?????????????????????????????й????????????????η???????????????臨????顣2016??11??30?????????????????????????????й??????????????????η???????????????臨????????á?2017??4??7???????????ó?????????????永??????????????????????Ч???2022??2??24???25???????????ó?????????????????????????棬??????????????й????????????????η???????????????臨????顣

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