In a protective measure, "Klim" milk powders produced in China by the Switzerland-based Nestle are taken from shelves at a local grocery store in Taipei, Taiwan, 02 Oct 2008

Hong Kong says another child in the territory has developed kidney problems after consuming Chinese-made milk products that were tainted with an industrial chemical.

Hong Kong authorities announced Tuesday that doctors diagnosed the two-year-old boy with kidney stones, but he does not require hospitalization.

Over the past two years, the boy regularly has consumed milk produced by the Chinese company Yili, as well as a brand of cookies that also have tested positive for the chemical melamine.

Contaminated dairy products from China have been blamed for sickening at least six other Hong Kong children.

Also Tuesday, China ordered that all liquid and powdered milk made before September 14th be taken off store shelves across the country to be tested for melamine.

The presence of the chemical melamine in dairy products has been blamed for killing four children and sickening tens of thousands of others.

Melamine has been detected in Chinese-made products overseas, and more than 50 nations have ordered the recall or prohibition of milk products made in China.

The chemical melamine can cause kidney stones, and in some cases can lead to life-threatening kidney failure.

Melamine is used primarily in plastics, fertilizers and flame retardants. Chinese authorities say it was added to milk products to make them appear richer in protein.

Some information for this report was provided by AP.