近年来，随着人们物质生活的日益丰富，生活节奏的逐渐加快，消费者的饮食结构、饮食习惯也悄然发生变化，饮食方式愈加简便快捷，已成为一种新的消费趋势。牛奶是含有最多最全营养成分的食品之一，尤其是液体牛奶，更是食用方便，已被越来越多的都市消费者接受，牛奶的需求量 In recent years, with the increasingly rich material life and the gradual acceleration of the pace of life, the diet structure and eating habits of consumers have quietly changed. The diet has become more simple and quick, and has become a new consumption trend. Milk is one of the foods that contains the most and most nutritious ingredients, especially liquid milk. It is more convenient to eat and has been accepted by more and more urban consumers. The demand for milk