A group of Chinese producers and exporters of multilayered wood flooring lost their legal challenge Nov. 26 to U.S. antidumping duties on their products.

The ruling by the Court of International Trade maintains a duty rate of 17.37 percent on most Chinese flooring that entered the U.S. between December 2013 and November 2014.

The plaintiffs, including Fine Furniture (Shanghai) Ltd., took issue with several aspects of how the Commerce Department calculated the duties, including the department’s use of surrogate data from Romania and its calculation of the price of veneers used in making the flooring.

Commerce generally uses prices within...