A senior Chinese official said that 85 percent of the more than 20 million toys recalled by Mattel were caused by problematic designs from the US.

Li Changjiang, director of the General Administration of Quality Supervision, Inspection and Quarantine, told a press conference Monday that he examined samples of those recalled toys and found designing defects do exist in those products, which could easily hurt children.

He said those toys should be recalled, whatever country they have been exported to.

Chinese manufacturers are responsible for only 15 percent of the quality problems of the toys, he said.

He criticized U.S. importers for their lack of responsibility in dealing with problems arising from product quality.