In the past 20 years, in China there has been a rapid development in dairy products. The melamine
incident’s had a negative effect on people’s lives, the dairy product still increase by 20% annually. The
related cold-chain dairy products (frozen and chilled products) have developed very quickly, and the
annual increase rate is around 10%. In 2005, the dairy products reached 13.1 million tons, and in 2011
it reached 23.88 million tons, among which the liquid dairy products reached 20.61 million tons, The
people’s average consumption of dairy products is 14 kg per year, among which the consumption of
liquid milk is 13.3L(Cui Zhongfu, 2012).