In recent years, the output value of the food and beverage industry has maintained a rapid growth. Food and beverage is an indispensable part of people's life. With the improvement of people's life quality, the requirements for the quality of food and beverage are higher and higher, and the demand is also growing. Similarly, there are more and more enterprises producing food and beverage, The demand for air compressor and post-treatment equipment is also increasing. As food hygiene is directly related to people's life and safety, the compressed air used in food and beverage industry must be cautious, and the reasonable and correct selection and use of compressed air system is of great importance to ensure the hygiene and quality of food and beverage. The main applications include: valves and brake devices in automatic production lines of filling, packaging and bottling. Clean and dry compressed air is also needed for conveying, blowing, ventilating, fermenting, cooling and spraying of powdery materials.