"The commission made affirmative determinations with respect to its antidumping duty investigations concerning imports of these products from Korea, Taiwan, and Thailand, and its countervailing duty investigation concerning imports of these products from Vietnam," it said in a statement.

"The Commission further made a finding of negligibility and voted to terminate the antidumping duty investigation concerning imports of these products from Vietnam."

(Reporting by Washington newsroom; Editing by Chizu Nomiyama)