Dumping Margin

The amount by which the imported merchandise is sold in the United States
below the home market or third country price or the constructed value (that
is, at less than its "fair value"). For example, if the U.S. "purchase
price" is $200 and the fair value is $220, the dumping margin is $20. This
margin is expressed as a percentage of the United States price. In this
example, the margin is 10 percent.