Changed circumstances reviews means circumstances at the time of adopting anti-dumping measures change after adoption of anti-dumping measures, Authorities shall conduct such reviews to decide whether continue or modify the anti-dumping measures.Huamei can representChinese exporters for responding to all questionnaires in the whole procedure, specially including:Submit review request; fill in and submit the originaland supplemental questionnaires; submit case briefs or rebuttal briefs.