A statement from China's National Office Against Pornographic and Illegal Publications on Friday announced the accomplishment, China's Xinhua news agency reported.
The agency said it also handled more than 15,000 cases in 2012 having to do with illegal publications, adding that some suspects have already been prosecuted.
Those already prosecuted include the ringleader of a Beijing operation that sold more than 35,000 pornographic products. In another case, two men received 36 months and 40 months in prison, respectively, for printing and selling pirated textbooks.
The General Administration of Press and Publication said China's publication industry brought in $264.7 billion in 2012, representing a 13.6 percent increase from 2011. Digital publication also increased in 2012.