関税局―通関士試験日程公報3月20日
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Registered Customs Specialist Examination schedule is announced.
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Customs and Tariff Bureau (CTB) announces as under that the time schedule of the examination and venues of the examination.
http://www.customs.go.jp/tsukanshi/53_shiken/53shiken_nittei.htm
Customs FAQ 8001 ? 8101 explain what is Registered Customs Specialist and the examination.
http://www.customs.go.jp/english/c-answer_e/customsanswer_e.htm