Saying that all products had been intercepted before reaching the public, one of China's largest companies in Sichuan province announced on December 26, 2011 that a large batch of milk was found containing excess levels of the cancer-causing substance aflatoxin.

http://www.channelnewsasia.com/stories/afp_asiapacific/view/1173367/1/.html
http://www.smh.com.au/world/toxin-found-in-chinese-milk-20111226-1pafi.html
http://www.google.com/hostednews/ap/article/ALeqM5g0NY-wfDZSSDZccSLevXxnMproyQ?docId=b1ebb44edeae4cc4b3d6c5bfa1928f67