BEIJING, Dec. 29 (Xinhua) -- The United States is irresponsible in putting Chinese companies on a list of "notorious marketplaces," the Ministry of Commerce (MOC) said Thursday.

China hopes the United States will objectively evaluate China's work on IPR protection, said MOC spokesperson Shen Danyang at a press conference.

Given that the United States trade representative's office was ambiguous in its descriptions of Chinese companies, its report did not represent the U.S. government's analysis, according to Shen.

China has been negotiating with the United States on "notorious marketplaces," Shen said.

China hopes the United States will improve its own transparency and evaluation processes in an impartial way.