Last month, batches of dairy products made by three Chinese companies were removed from shops in the southwestern province of Guizhou, after testing positive for melamine.

Tainted milk products were also found in several provinces in 2009, from the northeastern province of Liaoning to the economic hub of Shanghai, the newspaper said.

There have been no reported deaths or illnesses from the latest batches of tainted milk which can cause kidney stones in children and made up to 300,000 infants sick in the 2008 scandal.

The scandal also triggered an uproar abroad, resulting in many Chinese dairy products being withdrawn from sale around the world.