In 2008, infant formula from the Sanlu Group was found to contain melamine. China’s Ministry of Health reported nearly 296,000 children with urinary problems, six of whom died.
According to the account in Chinese Wikipedia, Sanlu’s own tests had found melamine in 15 of 16 batches that summer. On August 1, chairwoman Tian Wenhua ordered the matter covered up. City officials blocked a public recall until after the Beijing Olympics. In January 2009, Tian was sentenced to life imprisonment.