Normally, the dog food we often see and talk about in our daily lives is the dry-type puffed dog food, which is also a commercial dog food. It is a special dog food that is made by mixing many nutrient materials, then puffing or extruding, and then drying and dehydrating, seasoning and other processes. The moisture content is generally below 12%. This type of food is comprehensive and nutritious. Balanced, long shelf life, convenient feeding and carrying, affordable, and more and more people are accepted and sought after. At the same time, it also has the characteristics of easy digestion and absorption. The digestibility of this type of dog food can reach about 70%. , Its unit heat energy can reach 6.27~6.69KJ/kg, the energy is very rich. Because of this, this kind of dog food has increasingly penetrated into many pet families. Although today, there are still many families who do not feed puffed dog food to their pets, but with the popularization of scientific dog-raising knowledge, the application range of puffed dog food has gradually expanded. Jinan shengrun Machinery is a professional manufacture of pet food machine.