What are air compressors generally used for?

The role of air compressor is very much, mainly used in medical, factories, mines, attempts, drilling for water, pipeline pressure testing, anticorrosion and rust removal. In factories, the role of each factory is different, for example, stamping plant will be used to drive the punch press, some are cleaning equipment, some use wind tools, blowing glass bottles, our beer is blown out with an air compressor. Some also use air compressors for transportation, I've seen some use air compressors to transport cement at the docks. There are quite a few uses for air compressors.