San Lu 700 tons of baby milk powder has been contaminated melamine which has made nearly 53,000 children ill in china, Four children have died and about 13,000 remain in hospital, 104 of them reportedly in a serious condition.
The problem was first revealed two weeks ago, when milk powder from the Sanlu Group was found to contain melamine, an industrial chemical.
At least 22 other companies have since become involved in the scandal, and milk products made by the Yili, Mengniu and other groups have been recalled from supermarket shelves in China and many other countries.
Anger and fear
Correspondents say the scale of this contamination scandal is only now becoming clear.
Tens of thousands of children are now known to have been affected in China itself.
Meanwhile authorities in Singapore, Malaysia, Hong Kong, Taiwan, Japan, the Philippines, Vietnam and elsewhere have been testing Chinese-made dairy products or pulling them from the shelves altogether.
