According to the program of the United States, the United States International Trade Commission made the preliminary ruling on the investigation or about December 31, if the agency determines that substantial damage or the threat of such products imported from China to the U.S. industry, the U.S. Department of Commerce will continue to implementanti-dumping investigation, and in April 2013 made the preliminary ruling.
The silica brick acidic refractories, mainly used in coke ovens, iron stove and glass furnace. U.S. Department of Commerce data show that U.S. imports from China in 2011, a total value of approximately $ 43.2 million of silica brick products.