The former chairwoman of one of China’s biggest dairy producers pleaded guilty to selling fake milk powder.

The former chairwoman of one of China’s biggest dairy producers pleaded guilty to selling fake and substandard milk powder.

Nine people accused of intentionally tainting China’s dairy supplies earlier this year went on trial Monday in the country’s worst food safety case in decades.

The Sanlu Group, the Chinese dairy company closed in September after it sold contaminated infant formula, has been declared bankrupt by a Chinese court.

In China’s widening milk scandal, dairy farmers say that the real culprits are dairy companies and the milking stations that they operate.

The formula is implicated in the death of one infant, and at least 432 others have been afflicted with kidney problems.

The Health Ministry announced an inquiry into the safety of all formulas after a death and kidney problems.