BEIJING - China has vowed to crack down on video and audio makers that are involved in piracy during the Shanghai World Expo.

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The National Copyright Administration (NCA) Thursday announced many licensed video and audio companies were found to be involved in making or selling pirated publications in a recent crackdown beginning March 5. Many of the pirated publications are sold online.

The spokesperson of the NCA said any organization or individual involved would be severely punished.

Internet Service Providers are urged to shut down websites selling pirated publications.

About 3.07 million pirated audio and video products have been confiscated and 3,238 illegal sales outlets shut down during the crackdown so far.

The administration has started an emergency response system in an effort to protect the copyright of pavilion designs, mascots, anthems and logos during the upcoming Shanghai World Expo which runs from May 1 to October 31.