A U.S. government agency said Friday that a local industry has been hurt by South Korea's allegedly unfair export of large power transformers. In July, a group of U.S. producers of liquid dielectric large power transformers (LPTs) filed an antidumping duty petition with the U.S. Department of Commerce and the International Trade Commission (ITC), charging that unfairly traded imports of LPTs are causing material injury to the domestic industry.