This dispute concerns the measures China took to implement the Dispute Settlement Body's rulings inChina–GOES, which had found a number of violations with respect to China's antidumping and countervailing duties imposed on grain oriented flat-rolled electrical steel (GOES) imported from the United States. In this compliance proceeding, the United States claimed that the Redetermination issued by China's Ministry of Commerce (MOFCOM) continued to violate WTO law. At the center of the dispute were MOFCOM's findings that the US imports had the effect of suppressing and/or depressing the prices of domestic like products. While the Panel reached the conclusion that the MOFCOM findings were inconsistent with WTO rules, it did not clarify the criteria for determining such price effects. In this comment, we call for the adoption of a clearer and more objective standard for determining price suppression and price depression in antidumping and countervailing duty investigations, via the tools of economic modeling.