BEIJING -- China's Internet giant Sina.com on Sunday made another apology for its involvement in online pornography, saying that the website will obey the authorities' punishment.

"As one of the influential websites in China, Sina has failed to shoulder its due responsibility and we feel deeply sorry for that," the company said in a statement to Xinhua.

Chinese authorities on Thursday announced to revoke the company's two crucial licenses on Internet publication and audio and video dissemination and impose "a large number of fines" for pornography on its website.

The National Office Against Pornographic and Illegal Publications said that 20 articles and four videos posted on Sina.com were confirmed to have contained lewd and pornographic content following "a huge amount" of public tip-offs.

Sina on the same day posted an apology to netizens and the public.

"We would like to make another apology to express our deep regret to the public," the Sunday statement said.

The statement said Sina will carefully observe the authorities' decision and will follow more strict standard in supervising its contents.

It also encouraged the netizens and the public to report violations on its website and published a hotline number and an Email address to receive such tip-offs.

"Sina is willing to work with other website operators to make vigorous efforts in the country's anti-porn campaign and create a clean Internet environment," the statement said.