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   WASHINGTON, Nov 19 (Reuters) - The U.S. International Trade Commission on Tuesday concluded that U.S. industry is materially injured by Chinese-made mattresses that are sold at less than fair value, paving the way for the U.S. Commerce Department to impose anti-dumping duties.
   The commission said in a statement it made a negative finding regarding critical circumstances regarding the mattress imports, which meant that such imports would not be subject to retroactive anti-dumping duties.
   It said a full report would be published by Dec. 30.
   The Commerce Department in May said it had determined that Chinese-made mattresses were being dumped in the U.S. market at less than fair value, and that it would impose preliminary anti-dumping duties, ranging from 57% up to 1,731%.
   Major U.S. mattress firms had petitioned for relief, including Serta Simmons Bedding LLC, Leggett & Platt Inc  and Tempur Sealy International Inc .
   In 2017, the United States imported $436.5 million in Chinese-made mattresses, the Commerce Department said. The duties cover adult mattresses ranging from twin to California king size and crib or youth mattresses.

(Reporting by Andrea Shalal; Editing by Lisa Shumaker and Nick
Zieminski)
((andrea.shalal@tr.com; +1 202-815-7432;)