Learn the word: Melamine 三聚氰胺

Melamine is a chemical composed of nitrogen, carbon, and hydrogen that is often mixed with formaldehyde to make plastic. It was a substance not supposed to exist in food.
In 2007, thousands of pet in the U.S. died after eating pet food contaminated with Chinese melamine.
Now 2008, some kids in China died and many were sick after consuming milk contaminated with melamine.

See, there was already a serious case in 2007, and the government did not do anything further.

Learn from experience. Pets--> Human, Human--> pets. Animal--> Plants , Plants--> Animal

It is like things happened in Taiwan, Just gone with someone who corrupts ( Former President, A-Bian) , then comes someone who kills ( the new government's policy with melamined milk).
走了謀財的，來個害命的。

Taiwan's health burea set a threshold to examine milk's contamination of melamine. If that substance could hurt human health, there should be no threshold for the substance to exist.