...[A] batch of milk produced by China's [Mengniu Dairy Group] was tainted with excessive levels of a cancer-causing toxin [aflatoxin], the company…still refuses to reveal the batch number and the source of the raw milk. "The reason for the incident has been identified as moldy cattle feed, which led to excessive aflatoxin in the raw milk," Mengniu Dairy Group said in a statement…"[N]ot a single carton of [faulty] milk has made its way into the market". Modern Farming, a major supplier of raw milk to Mengniu…has come under suspicion as the source…[P]resident of Modern Farming, told…their own tests…have found no problems so far…Changfu Dairy…the other company found to have excessive levels of aflatoxin in its milk, has admitted the problematic batch had been sold to the market. "But we initiated the recall immediately after the test, and have destroyed the batch"…