SHIJIAZHUANG, China, Sept 16 (Reuters) - Almost 20 percent of Chinese dairy firms probed in the wake of a baby milk health scare have been found to have produced melamine-tainted formula, state media reported.
The results of a government-led probe announced on Tuesday showed that out of 109 dairy producers checked, 22 had been found to have produced batches of milk contaminated with melamine.
Chinese quality officials last week ordered a nationwide probe into all baby milk powders after state media reported that dozens of children had developed kidney stones after drinking tainted formula produced by the Sanlu Group.
State television, citing China's quality watchdog, said as well as the Sanlu Group, offending companies included Beijing Olympic Games supplier Yili and other major brands. (Additional reporting by Ian Ransom and Chris Buckley; Editing by Jeremy Laurence)
