Authorities have cracked down on online pornography in a recent spate of cases, sending a strong signal that they intend to rein in Internet abuse, experts say.

In the latest case, authorities in Guangdong province revoked the value-added telecommunications business license held by Shenzhen QVOD Technology Co, according to an official statement on Thursday.

Zhou Huilin, deputy head of the National Office Against Pornographic and Illegal Publications, said the license was revoked because the company spread pornographic content.