Melamine !

More harm to have other chemicals in addition to Melamine contamination.

chemical substance called melamine.

releasing nitrogen when burned or charred.. Melamine is one of the major components in Pigment Yellow 150, a colorant in inks and plastics. The use of melamine as fertilizer for crops has been envisaged during the '50 and '60 years because of its high nitrogen content (~66.5% N. However, the hydrolysis reactions of melamine leading to the nitrogen mineralisation in soils are very slow, precluding a broad use of melamine as fertilizing agent.
Melamine is sometimes illegally added to food products in order to increase the apparent protein content.
A toxicology study conducted after recalls of contaminated pet food concluded that the combination of melamine and cyanuric acid in diet does lead to acute renal failure in cats
In March 2007, the US reported finding white granular melamine in the pet food, in samples of white granular.
the New York Times reported that, despite the widely reported ban on melamine use in vegetable proteins in mainland China, at least some chemical manufacturers continued to report selling it for use in animal feed and in products for human consumption. Li Xiuping, a manager at Henan Xinxiang Huaxing Chemical in Henan Province, stated, "Our chemical products are mostly used for additives, not for animal feed. Melamine is mainly used in the chemical industry, but it can also be used in making cakes.
In September 2008, several companies were implicated in a scandal involving milkBy 22 September, nearly 53,000 illnesses, over 12,800 hospitalisations, and four infant deaths had been reported, caused by kidney stones and other....
Melamine may have been added to fool government quality tests after water was added to fraudulently increase the milk's volume, since melamine will cause a false increase in the measurement of protein by increasing the nitrogen levels in the milk.
Melamine was first synthesized by the German chemist in 1834.
Between 2002 and 2007, while the global melamine price remained stable, a steep increase in the price of urea (feedstock for melamine) has reduced the profitability of melamine manufacturing. Currently, China is the world's largest exporter of melamine, while its domestic consumption still grows by 10% per year. However, reduced profit has already caused other joint melamine ventures to be postponed there.( note that it is available throughout the whole world).

c3 file Dr. chong J. Mendu, Kuching for friends