U.S. paper companies said on Wednesday they have lodged a complaint about imports from China and other countries that could lead to duties on imported uncoated paper, including copy paper used in offices and homes across the country. Domtar Corporation, Packaging Corporation of America , Finch Paper LLC and P.H. Glatfelter Company said they sought duties to offset China, Indonesia, Brazil, Portugal and Australia selling paper too cheaply in the United States, and to offset unfair government subsidies in China and Indonesia.